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Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

University of California, San Diego (Scripps) | Open Energy Information  

Open Energy Info (EERE)

(Scripps) (Scripps) Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name University of California, San Diego (Scripps) Address Scripps Institution of Oceanography, 8825 Biological Grade Place La Jolla, California Zip 92037 Sector Hydro Phone number (858) 534-4303 Website http://hydraulicslab.ucsd.edu/ Coordinates 32.8696162°, -117.2526848° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.8696162,"lon":-117.2526848,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

2

Scripps Channel 1 | Open Energy Information  

Open Energy Info (EERE)

Scripps Channel 1 Scripps Channel 1 Jump to: navigation, search Basic Specifications Facility Name Scripps Channel 1 Overseeing Organization University of California, San Diego (Scripps) Hydrodynamic Testing Facility Type Channel Length(m) 44.5 Beam(m) 2.4 Depth(m) 2.4 Cost(per day) Contact POC Special Physical Features Strategically placed windows, longest being 5.5m, allow optical access from side Towing Capabilities Towing Capabilities Yes Maximum Velocity(m/s) 2 Length of Effective Tow(m) 7.0 Wavemaking Capabilities Wavemaking Capabilities Yes Maximum Wave Height(m) 0.6 Maximum Wave Height(m) at Wave Period(s) 10.0 Wave Period Range(s) 10.0 Current Velocity Range(m/s) 0.0 Programmable Wavemaking Yes Wavemaking Description Function Generator or user provided Wave Direction Uni-Directional

3

Scripps Flume | Open Energy Information  

Open Energy Info (EERE)

Basic Specifications Facility Name Scripps Flume Overseeing Organization University of California, San Diego (Scripps) Hydrodynamic Testing Facility Type Flume Length(m) 16.0 Beam(m) 1.1 Depth(m) 1.1 Cost(per day) Contact POC Special Physical Features Double sided glass wall test section. Towing Capabilities Towing Capabilities None Wavemaking Capabilities Wavemaking Capabilities None Channel/Tunnel/Flume Channel/Tunnel/Flume Yes Velocity(m/s) 1.25 Recirculating No Wind Capabilities Wind Capabilities None Control and Data Acquisition Description Data only, control system separate, pc based, Measurement Computing PCI-DAS6014 card, 16 channel, 16 bit. DAS-Wizard software. Number of channels 16 Bandwidth(kHz) .1 Hz; dependent on number of channels and computer speed

4

Scripps Channel 2 | Open Energy Information  

Open Energy Info (EERE)

Channel 2 Channel 2 Jump to: navigation, search Basic Specifications Facility Name Scripps Channel 2 Overseeing Organization University of California, San Diego (Scripps) Hydrodynamic Testing Facility Type Channel Length(m) 33.0 Beam(m) 0.5 Depth(m) 0.5 Cost(per day) Contact POC Special Physical Features All side walls and 11m of the tank bottom are glass to provide optical access. Towing Capabilities Towing Capabilities Yes Maximum Velocity(m/s) 0.7 Length of Effective Tow(m) 20.0 Wavemaking Capabilities Wavemaking Capabilities Yes Maximum Wave Height(m) 0.3 Maximum Wave Height(m) at Wave Period(s) 10.0 Wave Period Range(s) 0.0 Current Velocity Range(m/s) 0.0 Programmable Wavemaking Yes Wavemaking Description Function Generator or user provided Wave Direction Uni-Directional

5

Center for Environment and National Security at Scripps | Open Energy  

Open Energy Info (EERE)

National Security at Scripps National Security at Scripps Jump to: navigation, search Logo: Center for Environment and National Security at Scripps Name Center for Environment and National Security at Scripps Place San Diego, California Website http://sio.ucsd.edu/cens/ References CENS - About[1] LinkedIn Connections Contents 1 Overview 2 Headlines 3 Resources 3.1 CENS Programs 3.2 CENS Tools 4 References Overview Center for Environment and National Security at Scripps is an organization based in San Diego, California. "The Center uses the formidable science and research capacity of Scripps Institution of Oceanography to clarify significant environmental impacts on our national security and international human security, thus bringing information to policy makers for the resolution of society's most pressing

6

San Diego County, California  

Broader source: Energy.gov [DOE]

Location: San Diego County, CaliforniaSeed Funding: $3.9 milliona portion of Los Angeles County's $30 million fundingTarget Building Types: Residential (single-family and multifamily)Website:...

7

Academia Sinica and The Scripps Research Institute Joint Conference on Chemical Biology Sciences  

E-Print Network [OSTI]

. Jeffery Kelly https://www.scripps.edu/research/faculty/kelly Chairman, Department of Molecular of viral coat protein mimics Lecturer 5 (14:00-14:45) Dr. Benjamin Cravatt https

8

Modern Records of Atmospheric Oxygen (O2) from Scripps Institution of  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Trace Gases » Oxygen » Modern Records of Atmospheric Oxygen Atmospheric Trace Gases » Oxygen » Modern Records of Atmospheric Oxygen (O2) from Scripps Institution of Oceanography Modern Records of Atmospheric Oxygen (O2) from Scripps Institution of Oceanography Introduction This page provides an introduction and links to records of atmospheric oxygen (O2) concentrations at nine currently active stations. Records since 1989 are available from Scripps Pier and Alert, Alaska, although these are not continuous. Continuous records from seven stations extend back to 1993, and data for the other two stations (Cold Bay, Alaska and Palmer Station, Antarctica) are available back to the mid 1990s. These data are from remote locations or other locations situated so that they represent averages over large portions of the globe rather than local background sources.

9

Center for Environment and National Security at Scripps Feed | Open Energy  

Open Energy Info (EERE)

Environment and National Security at Scripps Feed Environment and National Security at Scripps Feed Jump to: navigation, search Home | About | Inventory | Partnerships | Capacity Building | Webinars | Reports | Events | News | List Serve CLEAN Member Feeds Center for Environment and National Security at Scripps Centro de Energías Renovables (CER) The Children's Investment Fund Foundation (CIFF) Climate and Development Knowledge Network (CDKN) Climate Technology Initiative (CTI) ClimateWorks Foundation Coalition for Rainforest Nations (CfRN) Ecofys Energy Research Centre of the Netherlands (ECN) Energy Sector Management Assistance Program of the World Bank (ESMAP) Environment and Development Action in the Third World (ENDA-TM) German Aerospace Center (DLR) German Agency for International Cooperation (GIZ) Global Village Energy Partnership (GVEP)

10

San Diego State police department  

E-Print Network [OSTI]

San Diego State University police department 2011 Safety and Security report imperial valley campus #12;A Message from the Chief of Police Welcome to San Diego State University - Imperial Valley Campus University Imperial Valley Campus. As members of the IV campus community we all share the responsibility

Ponce, V. Miguel

11

San Diego State police department  

E-Print Network [OSTI]

San Diego State University police department 2012 Safety and Security report imperial valley campus #12;A Message from the Chief of Police Welcome to San Diego State University - Imperial Valley Campus University Imperial Valley Campus. As members of the IV campus community we all share the responsibility

Ponce, V. Miguel

12

Better Buildings Neighborhood Program: San Diego  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diego to Diego to someone by E-mail Share Better Buildings Neighborhood Program: San Diego on Facebook Tweet about Better Buildings Neighborhood Program: San Diego on Twitter Bookmark Better Buildings Neighborhood Program: San Diego on Google Bookmark Better Buildings Neighborhood Program: San Diego on Delicious Rank Better Buildings Neighborhood Program: San Diego on Digg Find More places to share Better Buildings Neighborhood Program: San Diego on AddThis.com... Better Buildings Residential Network Progress Stories Interviews Videos Events Quick Links to Partner Information AL | AZ | CA | CO | CT FL | GA | IL | IN | LA ME | MD | MA | MI | MO NE | NV | NH | NJ | NY NC | OH | OR | PA | SC TN | TX | VT | VI | VA WA | WI San Diego County, California Energy Upgrade California Motivates Home Improvements in San Diego County

13

Sea Surface Temperature Variability at the Scripps Institution of Oceanography Pier  

Science Journals Connector (OSTI)

Sea surface temperature (SST) has been measured from near the end of the Scripps Institution of Oceanography (SIO) pier daily since 1916. It is one of the worlds longest instrumental time series of SST. It is widely used in studies of climate and ...

David M. Checkley Jr.; Martin Lindegren

2014-11-01T23:59:59.000Z

14

Geology of the San Diego margin, Carlsbad to La Jolla, San Diego County, California.  

E-Print Network [OSTI]

??Geophysical interpretation of nearly 800 line km of various types of seismic reflection data along the San Diego margin between Carlsbad and San Diego was (more)

Webb, James Franklin

1984-01-01T23:59:59.000Z

15

(SAN DIEGO ASSOCIATION OF GOVERNMENTS)  

E-Print Network [OSTI]

and green building programs available. This action plan was developed with assistance from CCSESANDAG (SAN DIEGO ASSOCIATION OF GOVERNMENTS) SUSTAINABLE REGION PROGRAM ACTION PLAN CONSULTANTREPORT Prepared For: California Energy Commission Prepared By: SANDAG, California Center for Sustainable

16

San Diego County- Wind Regulations (California)  

Broader source: Energy.gov [DOE]

The County of San Diego has established zoning guidelines for wind turbine systems of varying sizes in the unincorporated areas of San Diego County. Wind turbine systems can be classified as small,...

17

IMPERIAL VALLEY SAN DIEGO STATE UNIVERSITY  

E-Print Network [OSTI]

BULLETIN THE IMPERIAL VALLEY CAMPUS 2004-2005 SAN DIEGO STATE UNIVERSITY 720 HEBER AVENUE present the 2004-2005 Bulletin of the Imperial Valley Campus of San Diego State University. Its in the educational opportunities offered at the Imperial Valley Campus of San Diego State University and look forward

Gallo, Linda C.

18

Building Momentum UC San Diego Foundation  

E-Print Network [OSTI]

Building Momentum UC San Diego Foundation Financial Statements June 30, 2011, and 2010 #12;INDEX 1;1UC San Diego Foundation Financial Statements 2010­11 Report of Independent Auditors The Board of Trustees UC San Diego Foundation In our opinion, the accompanying statements of net assets and the related

Russell, Lynn

19

Demonstration Home ProgramSan Diego  

Broader source: Energy.gov [DOE]

Presents the California Center for Sustainable Energy's communications strategies for, challenges of, and lessons learned from its Home Tour event in San Diego.

20

San Diego, California: Solar in Action (Brochure), Solar America...  

Broader source: Energy.gov (indexed) [DOE]

San Diego, California: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) San Diego, California: Solar in Action (Brochure), Solar...

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

San Diego Hero Alliance: Community-Based Social Marketing Pilot...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

San Diego Hero Alliance: Community-Based Social Marketing Pilot Program San Diego Hero Alliance: Community-Based Social Marketing Pilot Program Presents an overview of the...

22

Alternative Fuels Data Center: San Diego Leads in Promoting EVs  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

San Diego Leads in San Diego Leads in Promoting EVs to someone by E-mail Share Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Facebook Tweet about Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Twitter Bookmark Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Google Bookmark Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Delicious Rank Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Digg Find More places to share Alternative Fuels Data Center: San Diego Leads in Promoting EVs on AddThis.com... Sept. 3, 2011 San Diego Leads in Promoting EVs W atch how San Diego is leading the way in promoting electric vehicles. For information about this project, contact San Diego Regional Clean Cities

23

IMPERIAL VALLEY SAN DIEGO STATE UNIVERSITY  

E-Print Network [OSTI]

BULLETIN THE IMPERIAL VALLEY CAMPUS 2006-2007 SAN DIEGO STATE UNIVERSITY 720 HEBER AVENUE pleasure that we present the 2006-2007 Bulletin of the Imperial Valley Campus of San Diego State University of Imperial Valley. During this time we have evolved from an institution created to grant elementary teaching

Gallo, Linda C.

24

IMPERIAL VALLEY SAN DIEGO STATE UNIVERSITY  

E-Print Network [OSTI]

BULLETIN THE IMPERIAL VALLEY CAMPUS 2005-2006 SAN DIEGO STATE UNIVERSITY 720 HEBER AVENUE pleasure that we present the 2005-2006 Bulletin of the Imperial Valley Campus of San Diego State University of Imperial Valley. During this time we have evolved from an institution created to grant elementary teach ing

Gallo, Linda C.

25

IMPERIAL VALLEY SAN DIEGO STATE UNIVERSITY  

E-Print Network [OSTI]

BULLETIN THE IMPERIAL VALLEY CAMPUS 2007-2008 SAN DIEGO STATE UNIVERSITY 720 HEBER AVENUE pleasure that we present the 2007-2008 Bulletin of the Imperial Valley Campus of San Diego State University of Imperial Valley. During this time we have evolved from an institution created to grant elementary teaching

Gallo, Linda C.

26

IMPERIAL VALLEY SAN DIEGO STATE UNIVERSITY  

E-Print Network [OSTI]

BULLETIN THE IMPERIAL VALLEY CAMPUS 2008-2009 SAN DIEGO STATE UNIVERSITY 720 HEBER AVENUE pleasure that we present the 2008-2009 Bulletin of the Imperial Valley Campus of San Diego State University of Imperial Valley. During this time we have evolved from an institution created to grant elementary teaching

Gallo, Linda C.

27

Imperial Valley Campus San Diego State University  

E-Print Network [OSTI]

2014--2015 IVC 2014--2015 Bulletin Imperial Valley Campus San Diego State University #12;BULLETIN THE IMPERIAL VALLEY CAMPUS 2014-2015 SAN DIEGO STATE UNIVERSITY 720 HEBER AVENUE CALEXICO, CALIFORNIA 92231 760 clarification. #12;2 SDSU Imperial Valley Campus Bulletin 2014-2015 Message from the Dean It is with great

Gallo, Linda C.

28

IMPERIAL VALLEY SAN DIEGO STATE UNIVERSITY  

E-Print Network [OSTI]

BULLETIN THE IMPERIAL VALLEY CAMPUS 2009-2010 SAN DIEGO STATE UNIVERSITY 720 HEBER AVENUE pleasure that we present the 2009-2010 Bulletin of the Imperial Valley Campus of San Diego State University of Imperial Valley. During this time we have evolved from an institution created to grant elementary teaching

Gallo, Linda C.

29

Source: University of California -San Diego  

E-Print Network [OSTI]

Source: University of California - San Diego Date: January 8, 2007 More on: , , , , , Brain Injury Brain Tumor Heart Disease Nervous System Neuroscience Psychology Research Bottleneck In Blood Supply Makes Brain Vulnerable To Strokes A team of UC San Diego physicists and neuroscientists has discovered

Kleinfeld, David

30

Scientific committee E. E. Fullerton : University of California, San Diego  

E-Print Network [OSTI]

committee I. Villanueva : University of California San Diego P. Lambert : University of Loraine E. Boyaux

Fainman, Yeshaiahu

31

University of California, San Diego Electrical and  

E-Print Network [OSTI]

University of California, San Diego Electrical and ComputerEngineering Graduate Programs Applied of the sun, the solar wind, and the interaction of the solar wind with various bodies in the solar syst

Fainman, Yeshaiahu

32

Clean Tech San Diego | Open Energy Information  

Open Energy Info (EERE)

San Diego San Diego Jump to: navigation, search Name Clean Tech San Diego Address 4510 Executive Drive Place San Diego, California Zip 92121 Region Southern CA Area Notes Non-profit membership organization formed to accelerate San Diego as a world leader in the clean technology economy Website http://www.cleantechsandiego.o Coordinates 32.875965°, -117.21085° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.875965,"lon":-117.21085,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

33

City of San Diego - Sustainable Building Policy | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

San Diego - Sustainable Building Policy San Diego - Sustainable Building Policy City of San Diego - Sustainable Building Policy < Back Eligibility Commercial Construction Local Government Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Home Weatherization Construction Commercial Weatherization Design & Remodeling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Water Heating Bioenergy Solar Windows, Doors, & Skylights Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Heating Wind Program Info State California Program Type Energy Standards for Public Buildings Provider San Diego Environmental Services Department The City of San Diego's Sustainable Building Policy is directed by Council Policy 900-14. The policy contains regulations regarding building

34

Clean Cities: San Diego Regional Clean Cities coalition  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Diego Regional Clean Cities Coalition Diego Regional Clean Cities Coalition The San Diego Regional Clean Cities coalition works with vehicle fleets, fuel providers, community leaders, and other stakeholders to reduce petroleum use in transportation. San Diego Regional Clean Cities coalition Contact Information Mike Ferry 858-244-7287 mike.ferry@energycenter.org Kevin Wood 858-244-7295 kevin.wood@energycenter.org Coalition Website Clean Cities Coordinators Coord Mike Ferry Coord Coord Kevin Wood Coord Photo of Mike Ferry Mike Ferry is the Transportation Programs Manager at the California Center for Sustainable Energy (CCSE), a nonprofit organization located in San Diego, CA, and is the coordinator of the San Diego Regional Clean Cities Coalition, San Diego's Clean Cities organization. In these roles, Mike

35

City of San Diego Environmental Services Department | Open Energy  

Open Energy Info (EERE)

Environmental Services Department Environmental Services Department Jump to: navigation, search Name City of San Diego Environmental Services Department Place San Diego, California Zip 92123 Sector Services, Solar Product City of San Diego's environmental services department. It is a power purchaser of electricity generated by a 0.9MW solar PV array located at its Alvarado water treatment plant. References City of San Diego Environmental Services Department[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. City of San Diego Environmental Services Department is a company located in San Diego, California . References ↑ "City of San Diego Environmental Services Department" Retrieved from

36

FUPWG Meeting Agenda - San Diego, CA | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Diego, CA Diego, CA FUPWG Meeting Agenda - San Diego, CA October 7, 2013 - 2:59pm Addthis FUPWG Fall 2007 - San Diego, California: Clean and Green November 28 - 29, 2007 Hosted by San Diego Gas & Electric Tuesday, November 27, 2007 8:00 - 5:00 Utility Energy Service Contract (UESC) 5:30 pm Steering Committee Meeting - Pacific Ballroom 6:30 pm Networking Dinner - Elephant Castle Restaurant and Pub Hosted by: San Diego Gas and Electric - A Sempra Energy utility logo FEMP logo Wednesday, November 28, 2007 7:45 - 8:30 Registration/Continental Breakfast 8:30 - 8:45 San Diego Gas & Electric Welcome Rick Morrow 8:45 - 9:15 FEMP Welcome and Attendee Introductions David McAndrew, FEMP 9:15 - 9:45 Washington Update David McAndrew, FEMP FEMP Updates Legislative Update Strategic Action Plan Update

37

EMERGENCY PROCEDURES SAN DIEGO STATE UNIVERSITY  

E-Print Network [OSTI]

EMERGENCY PROCEDURES SAN DIEGO STATE UNIVERSITY Imperial Valley (Calexico and Brawley) EMERGENCY PHONE NUMBERS CALEXICO POLICE DEPARTMENT DIAL 9-1-1 FROM ANY PHONE IMPERIAL VALLEY SHERIFF'S DEPARTMENT Imperial Valley Home page at www.ivcampus.sdsu.edu. · SDSU Home page at www.sdsu.edu . · Text message (sign

Ponce, V. Miguel

38

San Diego, California: Solar in Action (Brochure)  

SciTech Connect (OSTI)

This brochure provides an overview of the challenges and successes of San Diego, CA, a 2007 Solar America City awardee, on the path toward becoming a solar-powered community. Accomplishments, case studies, key lessons learned, and local resource information are given.

Not Available

2011-10-01T23:59:59.000Z

39

Curtis Smith, Diego Mandelli, Cristian Rabiti Idaho National...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A case study in the interaction of mechanistic and probabilistic safety analysis Curtis Smith, Diego Mandelli, Cristian Rabiti Idaho National Laboratory (INL) RISMC strategic goals...

40

Opening the Door: San Diego R&D Workshop Video  

Broader source: Energy.gov [DOE]

View the video from Jim Brodrick's opening presentation at the February 2011 DOE SSL R&D Workshop in San Diego, California.

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Local Impact, National Influence, Global Reach UC San Diego's  

E-Print Network [OSTI]

, Global Reach Impacting the Economy Overall Impact in San Diego County · Total economic impact of UC SanLocal Impact, National Influence, Global Reach UC San Diego's Economic Impact and Benefits in our Region and State Chancellor Marye Anne Fox #12;Local Impact, National Influence, Global Reach Economic

Russell, Lynn

42

3D RECONSTRUCTION FROM A SINGLE IMAGE Diego Rother  

E-Print Network [OSTI]

3D RECONSTRUCTION FROM A SINGLE IMAGE By Diego Rother and Guillermo Sapiro IMA Preprint Series. 1 3D Reconstruction from a Single Image Diego Rother and Guillermo Sapiro Abstract-- A probabilistic framework for 3D object reconstruction from a single image is introduced in this work. First

43

San Diego Gas & Electric Co | Open Energy Information  

Open Energy Info (EERE)

Diego Gas & Electric Co Diego Gas & Electric Co (Redirected from San Diego Gas and Electric Company) Jump to: navigation, search Name San Diego Gas & Electric Co Place San Diego, California Service Territory California Website www.sdge.com Green Button Landing Page www.sdge.com/customer-ser Green Button Reference Page www.sdge.com/green-button Green Button Implemented Yes Utility Id 16609 Utility Location Yes Ownership I NERC Location WECC NERC WECC Yes ISO CA Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Bundled Services Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] SGIC[3]

44

Sycamore San Diego Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

San Diego Biomass Facility San Diego Biomass Facility Jump to: navigation, search Name Sycamore San Diego Biomass Facility Facility Sycamore San Diego Sector Biomass Facility Type Landfill Gas Location San Diego County, California Coordinates 33.0933809°, -116.6081653° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.0933809,"lon":-116.6081653,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

45

City of San Diego - Sustainable Building Expedited Permit Program |  

Broader source: Energy.gov (indexed) [DOE]

San Diego - Sustainable Building Expedited Permit Program San Diego - Sustainable Building Expedited Permit Program City of San Diego - Sustainable Building Expedited Permit Program < Back Eligibility Commercial Industrial Residential Savings Category Heating & Cooling Home Weatherization Construction Commercial Weatherization Commercial Heating & Cooling Design & Remodeling Solar Buying & Making Electricity Program Info Start Date 05/20/2003 State California Program Type Green Building Incentive Provider City of San Diego In 2002, the City of San Diego passed a Resolution R-298001, which amended the [http://dsireusa.org/incentives/incentive.cfm?Incentive_Code=CA42R&re=1&ee=1 Sustainable Building Policy] to allow for expedited permitting for sustainable buildings. Sustainable buildings are defined in Policy Number

46

San Diego Area San Diego was founded in 1769 as the first of 21 California missions. It is  

E-Print Network [OSTI]

industries in the county are Defense, Manufacturing (high technology, electronics), and Tourism. San Diego is the site of one of the largest naval fleets in the world. In addition, San Diego's economy focuses, electronics manufacturing, defense-related manufacturing, financial and business services, ship

Squire, Larry R.

47

4 - Hydrodynamic Lubrication  

Science Journals Connector (OSTI)

Publisher Summary In this chapter the basic principles of hydrodynamic lubrication are discussed. The mechanisms of hydrodynamic film generation and the effects of operating variables such as velocity, temperature, load, design parameters, etc., on the performance of such films are outlined. These are explained using bearings commonly found in many engineering applications as examples. Secondary effects in hydrodynamic lubrication such as viscous heating, compressible and non-Newtonian lubricants, bearing-vibration and deformation are described and their influence on bearing-performance assessed. The complete separation of sliding surfaces by a liquid film under full hydrodynamic lubrication can allow bearings to operate indefinitely without any wear. Any liquid or gas can be used for this form of lubrication, provided that no chemical attack on the bearing occurs. The disadvantage of hydrodynamic lubrication is that a non-zero sliding or squeeze velocity is required before load capacity is obtained. Some damage to bearings during starting or stopping is inevitable because of this condition. Vibration induced by hydrodynamic instability may occur during operation at high speeds and this should always be carefully controlled. Despite these deficiencies, hydrodynamic lubrication is the preferred form of lubrication in most bearing systems.

Gwidon W. Stachowiak; Andrew W. Batchelor

2006-01-01T23:59:59.000Z

48

San Diego County - Design Standards for County Facilities | Department of  

Broader source: Energy.gov (indexed) [DOE]

Design Standards for County Facilities Design Standards for County Facilities San Diego County - Design Standards for County Facilities < Back Eligibility Local Government Savings Category Heating & Cooling Home Weatherization Construction Commercial Weatherization Commercial Heating & Cooling Design & Remodeling Bioenergy Manufacturing Buying & Making Electricity Alternative Fuel Vehicles Hydrogen & Fuel Cells Energy Sources Solar Wind Other Program Info State California Program Type Energy Standards for Public Buildings Provider San Diego County The San Diego County Board of Supervisors established design standards for county facilities and property. Among other requirements, the policy requires that all new county buildings or major building renovations obtain U.S. Green Building Council (USGBC) LEED Building Certification.

49

4 Hydrodynamic Lubrication  

Science Journals Connector (OSTI)

Publisher Summary This chapter discusses the theory of hydrodynamic lubrication. The chapter demonstrates how a basic property of all liquids, such as viscosity, can be used to produce cheap, reliable bearings that operate with low friction and wear. The mechanisms of hydrodynamic film generation and the effects of operating variables such as velocity, temperature, load, design parameters, etc., on the performance of such films are outlined. This is explained using bearings commonly found in many engineering applications as examples. Secondary effects in hydrodynamic lubrication such as viscous heating, compressible and non-Newtonian lubricants, bearing vibration and deformation is described and their influence on bearing performance is assessed. Like many important scientific principles, chance observation played an important role in the recognition of hydrodynamic action as a basic mechanism of bearing lubrication. The complete separation of sliding surfaces by a liquid film under full hydrodynamic lubrication can allow bearings to operate indefinitely without any wear. Any liquid or gas can be used for this form of lubrication provided that no chemical attack of the bearing occurs. The disadvantage of hydrodynamic lubrication is that a non-zero sliding or squeeze velocity is required before load capacity is obtained.

1993-01-01T23:59:59.000Z

50

San Diego Renewable Energy Society | Open Energy Information  

Open Energy Info (EERE)

San Diego Renewable Energy Society San Diego Renewable Energy Society Address P.O. Box 23490 Place San Diego, California Zip 92123 Region Southern CA Area Notes Dedicated to increasing the intelligent use of renewable and sustainable energy technologies in San Diego County Website http://sdres.org/ Coordinates 32.8102534°, -117.1323579° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.8102534,"lon":-117.1323579,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

51

ENERGY STAR Success Story San Diego Convention Center  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ENERGY STAR Success Story ENERGY STAR Success Story San Diego Convention Center Since opening 20 years ago, San Diego's bayside convention facility has been a green industry leader and continues to receive accolades for environmental stewardship. The San Diego Convention Center Corporation (SDCCC) joined the Environmental Protection Agency's (EPA) ENERGY STAR program as a partner in 2008. Using the EPA's online energy management and tracking tool, Portfolio Manager, the SDCCC tracked its energy consumption and has improved the facility's overall performance. Since then, the San Diego Convention Center has become a model for other convention and meeting facilities demonstrating the value of benchmarking to improve efficiency and to save money. . The Convention Center is managed and marketed by the SDCCC, a non-profit public

52

FinancialStatements2009/2010 San Diego State University  

E-Print Network [OSTI]

,280 852 3,132 Imperial Valley Campus 769 234 1,003 Professional Studies & Fine Arts 6,828 570 7 were concurrently enrolled at the San Diego main campus and the Imperial Valley campus. #12

Ponce, V. Miguel

53

UNIVERSITY OF CALIFORNIA, SAN DIEGO Hardware Optimizations Enabled by a  

E-Print Network [OSTI]

for publication on micro- lm: Chair University of California, San Diego 2001 iii #12;Dedications I dedicate and abuse. Thanks to both you and Sule for BBQs, biking, blading, and hiking. It is rare to nd someone so

Sair, Suleyman

54

San Diego County - Solar Regulations | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Solar Regulations Solar Regulations San Diego County - Solar Regulations < Back Eligibility Commercial Industrial Residential Savings Category Solar Buying & Making Electricity Program Info State California Program Type Solar/Wind Permitting Standards Provider County of San Diego The County of San Diego has established [http://www.sdcounty.ca.gov/dplu/zoning/formfields/DPLU-316.pdf zoning guidelines] for solar electric systems of varying sizes in the unincorporated areas of San Diego County. Photovoltaic (PV) systems which have their electricity consumed onsite are considered an accessory use in all zone types and are generally permitted as long as they meet the height and setback requirements. PV systems which generate power for offsite use and are located on parcels of land not larger than 10 acres may be allowed

55

pope-98.pdf  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laboratory Scripps Institution of Oceanography University of California San Diego, California Introduction The Atmospheric Radiation Measurement Enhanced Short- wave...

56

Hydrodynamics with Triangle Anomalies  

SciTech Connect (OSTI)

We consider the hydrodynamic regime of theories with quantum anomalies for global currents. We show that a hitherto discarded term in the conserved current is not only allowed by symmetries, but is in fact required by triangle anomalies and the second law of thermodynamics. This term leads to a number of new effects, one of which is chiral separation in a rotating fluid at nonzero chemical potential. The new kinetic coefficients can be expressed, in a unique fashion, through the anomaly coefficients and the equation of state. We briefly discuss the relevance of this new hydrodynamic term for physical situations, including heavy-ion collisions.

Son, Dam T. [Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195-1550 (United States); Surowka, Piotr [Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States); Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Krakow (Poland)

2009-11-06T23:59:59.000Z

57

Alternative Fuels Data Center: San Diego Prepares for Electric Vehicles in  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

San Diego Prepares for San Diego Prepares for Electric Vehicles in Multi-Unit Dwelling Communities to someone by E-mail Share Alternative Fuels Data Center: San Diego Prepares for Electric Vehicles in Multi-Unit Dwelling Communities on Facebook Tweet about Alternative Fuels Data Center: San Diego Prepares for Electric Vehicles in Multi-Unit Dwelling Communities on Twitter Bookmark Alternative Fuels Data Center: San Diego Prepares for Electric Vehicles in Multi-Unit Dwelling Communities on Google Bookmark Alternative Fuels Data Center: San Diego Prepares for Electric Vehicles in Multi-Unit Dwelling Communities on Delicious Rank Alternative Fuels Data Center: San Diego Prepares for Electric Vehicles in Multi-Unit Dwelling Communities on Digg Find More places to share Alternative Fuels Data Center: San Diego

58

Luminescence from hydrodynamic cavitation  

Science Journals Connector (OSTI)

...higher for monatomic gases than for more complicated...and polyatomic) gases, then the constituent...around 9000K for nitrogen and oxygen, and...ordinary diatomic gases. Only when the gas...hydrodynamic cavitation of water, containing dissolved...pressure. However, the solubility of xenon in water...

2011-01-01T23:59:59.000Z

59

San Diego County - Green Building Program | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Green Building Program Green Building Program San Diego County - Green Building Program < Back Eligibility Commercial Industrial Residential Savings Category Heating & Cooling Home Weatherization Construction Commercial Weatherization Commercial Heating & Cooling Design & Remodeling Solar Buying & Making Electricity Program Info State California Program Type Green Building Incentive Provider County of San Diego The County of San Diego has a Green Building Incentive Program designed to promote the use of resource efficient construction materials, water conservation and energy efficiency in new and remodeled residential and commercial buildings. As part of the program, the County will waive the fee for the building permit and plan check for a photovoltaic system. In addition, for qualifying resource conservation measures, the County will

60

City of San Diego RFP for Power Purchase (PV)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

City of San Diego City of San Diego Environmental Services Department Energy Conservation and Management Division Request for Proposal For Power Purchase of Renewable Energy (Photovoltaics) For City Facilities The City of San Diego is seeking a firm, or a team of firms, to provide cost effective solar photovoltaic electric generating systems at eight City sites. The City intends to enter into power purchase agreement(s) for terms up to twenty years with solar PV developer(s) at these sites. The developers may also be asked to assist the City with identifying implementing solar PV projects at other sites depending upon the success of the initial program. The City evaluated twenty four facilities that appear to have potential of accommodating solar PV systems ranging in size from 30 kilowatts to 1

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Keeping America Competitive: A Solar Manufacturing Boost In San Diego |  

Broader source: Energy.gov (indexed) [DOE]

Keeping America Competitive: A Solar Manufacturing Boost In San Keeping America Competitive: A Solar Manufacturing Boost In San Diego Keeping America Competitive: A Solar Manufacturing Boost In San Diego December 19, 2012 - 4:26pm Addthis Soitec's concentrating photovoltaic modules use Fresnel lenses to concentrate sunlight 500 times and focus it onto small, high-efficiency solar cells. | Photo by Matthias Heyde, Fraunhofer Institute. Soitec's concentrating photovoltaic modules use Fresnel lenses to concentrate sunlight 500 times and focus it onto small, high-efficiency solar cells. | Photo by Matthias Heyde, Fraunhofer Institute. Minh Le Minh Le Program Manager, Solar Program What are the key facts? Soitec's first large-scale CPV facility in San Diego is expected to create about 450 direct manufacturing jobs. The project was supported by a $25 million investment from the

62

ENERGY STAR Success Story: San Diego Convention Center | ENERGY STAR  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

San Diego Convention Center San Diego Convention Center Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

63

Gille-STPA 35 1 Sewage on San Diego Beaches  

E-Print Network [OSTI]

outflow pipe? (3) When plans were first made to address the heavy metals in Tijuana pollution on where sewage ends up? (2) One big issue for understanding sewage treatment has to do with heavy metals't dioxin or heavy metal a problem when Tijuana sewage is mixed with San Diego sewage in the Point Loma

Gille, Sarah T.

64

Discrete Green's functions University of California, San Diego  

E-Print Network [OSTI]

Discrete Green's functions Fan Chung University of California, San Diego La Jolla, CA 92093-0112 S study discrete Green's functions and their relationship with discrete Laplace equations. Several methods for deriving Green's functions are discussed. Green's functions can be used to deal with diffusion

Graham, Fan Chung

65

Computational Ship Hydrodynamics MOERI Propeller  

E-Print Network [OSTI]

Computational Ship Hydrodynamics MOERI Propeller This area of research is coordinated by the ship 5415 #12;Fluid-Structure Interaction MOERI Propeller 22 Associate force fluid to structure Associate hydrodynamics problems, like slamming and whipping. The code has recently been applied to wind turbine flows

Kusiak, Andrew

66

San Diego Solar Panels Generate Clean Electricity Along with Clean Water |  

Broader source: Energy.gov (indexed) [DOE]

Diego Solar Panels Generate Clean Electricity Along with Clean Diego Solar Panels Generate Clean Electricity Along with Clean Water San Diego Solar Panels Generate Clean Electricity Along with Clean Water May 26, 2010 - 12:11pm Addthis San Diego’s Otay Water Treatment Plant is generating clean electricity along with clean water, with a total capacity of 945 KW | Photo courtesy of SunEdison San Diego's Otay Water Treatment Plant is generating clean electricity along with clean water, with a total capacity of 945 KW | Photo courtesy of SunEdison Just north of the U.S.-Mexican border, San Diego's Otay Water Treatment Plant processes up to 34 million gallons of water a day. Thanks to the city's ambitious solar energy program, the facility may soon be able to do that with net zero electricity consumption. In early April, workers activated a 945-kW solar photovoltaic (PV) energy

67

Effects on the Physical Environment (Hydrodynamics, Sediment...  

Broader source: Energy.gov (indexed) [DOE]

Effects on the Physical Environment (Hydrodynamics, Sediment Transport, and Water Quality) Effects on the Physical Environment (Hydrodynamics, Sediment Transport, and Water...

68

San Diego, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Diego) Diego) Jump to: navigation, search Equivalent URI DBpedia Coordinates 32.7153292°, -117.1572551° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.7153292,"lon":-117.1572551,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

69

San Diego, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Diego, California: Energy Resources Diego, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 32.7153292°, -117.1572551° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.7153292,"lon":-117.1572551,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

70

San Diego Gas & Electric Co | Open Energy Information  

Open Energy Info (EERE)

& Electric Co & Electric Co (Redirected from SDG&E) Jump to: navigation, search Name San Diego Gas & Electric Co Place San Diego, California Service Territory California Website www.sdge.com Green Button Landing Page www.sdge.com/customer-ser Green Button Reference Page www.sdge.com/green-button Green Button Implemented Yes Utility Id 16609 Utility Location Yes Ownership I NERC Location WECC NERC WECC Yes ISO CA Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Bundled Services Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] SGIC[3] LinkedIn Connections

71

San Diego, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Diego, CA) Diego, CA) Jump to: navigation, search Equivalent URI DBpedia Coordinates 32.7153292°, -117.1572551° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.7153292,"lon":-117.1572551,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

72

San Diego Gas & Electric Co | Open Energy Information  

Open Energy Info (EERE)

Electric Co Electric Co Jump to: navigation, search Name San Diego Gas & Electric Co Place San Diego, California Service Territory California Website www.sdge.com Green Button Landing Page www.sdge.com/customer-ser Green Button Reference Page www.sdge.com/green-button Green Button Implemented Yes Utility Id 16609 Utility Location Yes Ownership I NERC Location WECC NERC WECC Yes ISO CA Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Bundled Services Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] SGIC[3] LinkedIn Connections CrunchBase Profile

73

Solar Survey of PV System Owners: San Diego  

Broader source: Energy.gov [DOE]

The purpose of the survey was to understand the motivation, challenges and benefits perceived by individuals who decided to install solar systems in the City of San Diego. Approximately 2000 surveys were sent, and 641 surveys were completed. The primary response was from the residential sector. Individuals had the option to reply electronically, using Survey Monkey, or to complete a paper survey. All responses were combined and checked to ensure that there were no duplicates.

74

E-Print Network 3.0 - atomics san diego Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Collection: Biology and Medicine 2 Atomic Scale Deformation Mechanisms of Amorphous Polyethylene under Tensile Loading Summary: , 2011 - San Diego, California 12;Outline ...

75

Text-Alternative Version: San Diego R&D Workshop Video  

Broader source: Energy.gov [DOE]

Following is a text version of Jim Brodrick's opening presentation video from the February 2011 DOE SSL R&D Workshop in San Diego, California.

76

DIEGO FAZI Mailing address: Solar Energy Conversion Group Chemical Sciences & Engineering Division  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DIEGO FAZI DIEGO FAZI Mailing address: Solar Energy Conversion Group Chemical Sciences & Engineering Division Bldg 200, Room E105 Argonne National Laboratory 9700 South Cass Ave. Argonne IL 60439-4831 E-mail addresses: dfazi@anl.gov Office Number: 630-252-5796 Fax: 630-252-9289 Personal Pages: http://faculty.wcas.northwestern.edu/diego-fazi/ http://www.fazid.org Research Interests Diego Fazi comes from a theoretical Physics background and he performed research in gravitational-wave astronomy within the project LIGO from 2005 to 2012. In October 2012 Dr. Fazi joined the CSE division at Argonne as a postdoctoral appointee in the Solar Conversion

77

San Diego Hero Alliance: Community-Based Social Marketing Pilot Program  

Broader source: Energy.gov [DOE]

Presents an overview of the California Center for Sustainable Energy's community-based social marketing strategies to promote home energy upgrades to San Diego military and veteran homeowners

78

Q&A With Byron Washom of the University of California at San Diego |  

Broader source: Energy.gov (indexed) [DOE]

Q&A With Byron Washom of the University of California at San Diego Q&A With Byron Washom of the University of California at San Diego Q&A With Byron Washom of the University of California at San Diego July 22, 2010 - 4:57pm Addthis Byron Washom, Director of Strategic Energy Initiatives at the University of California at San Diego, poses with an electric vehicle and some of the solar panels that cover UCSD's campus.| Photo courtesy of UCSD Byron Washom, Director of Strategic Energy Initiatives at the University of California at San Diego, poses with an electric vehicle and some of the solar panels that cover UCSD's campus.| Photo courtesy of UCSD Lorelei Laird Writer, Energy Empowers Byron Washom is helping to define and create solar energy's future. In 1984, Washom's company built a concentrated solar energy generator using

79

Q&A With Byron Washom of the University of California at San Diego |  

Broader source: Energy.gov (indexed) [DOE]

Q&A With Byron Washom of the University of California at San Diego Q&A With Byron Washom of the University of California at San Diego Q&A With Byron Washom of the University of California at San Diego July 22, 2010 - 4:57pm Addthis Byron Washom, Director of Strategic Energy Initiatives at the University of California at San Diego, poses with an electric vehicle and some of the solar panels that cover UCSD's campus.| Photo courtesy of UCSD Byron Washom, Director of Strategic Energy Initiatives at the University of California at San Diego, poses with an electric vehicle and some of the solar panels that cover UCSD's campus.| Photo courtesy of UCSD Lorelei Laird Writer, Energy Empowers Byron Washom is helping to define and create solar energy's future. In 1984, Washom's company built a concentrated solar energy generator using

80

Comments of San Diego Gas & Electric Company | Department of Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

San Diego Gas & Electric Company San Diego Gas & Electric Company Comments of San Diego Gas & Electric Company San Diego Gas & Electric Company ("SDG&E") submits these comments in response to the above-enumerated Request for Information noticed by the Department on May 11, 2010. SDG&E is a regulated electric and gas utility operating pursuant to authorities granted to it by the Federal Energy Regulatory Commission and the State of California. SDG&E serves 3.4 million consumers in the San Diego and southern Orange County areas of California via 1.4 million electric meters and 830,000 gas meters. SDG&E's sister company, the Southern California Gas Company, is the nation's largest gas-distribution utility, serving another 20.3 million consumers in a

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Group-invariant solutions of hydrodynamics and radiation hydrodynamics  

SciTech Connect (OSTI)

Using the property of invariance under Lie groups of transformations, the equations of hydrodynamics are transformed from partial differential equations to ordinary differential equations, for which special analytic solutions can be found. These particular solutions can be used for (1) numerical benchmarks, (2) the basis for analytic models, and (3) insight into more general solutions. Additionally, group transformations can be used to construct new solutions from existing ones. A space-time projective group is used to generate complicated solutions from simpler solutions. Discussion of these procedures is presented along with examples of analytic of 1,2 and 3-D hydrodynamics.

Coggeshall, S.V.

1993-08-01T23:59:59.000Z

82

San Diego Regional Clean Fuels Coalition | Open Energy Information  

Open Energy Info (EERE)

Fuels Coalition Fuels Coalition Jump to: navigation, search Name San Diego Regional Clean Fuels Coalition Place San Diego, California Zip 92123 Region Southern CA Area Notes Network of more than 80 volunteer, community-based coalitions, which develop public/private partnerships to work together as a coalition Website http://www.sdcleanfuels.org/ Coordinates 32.8102534°, -117.1323579° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.8102534,"lon":-117.1323579,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

83

Hydrodynamic Description of Protein Folding  

Science Journals Connector (OSTI)

A hydrodynamic description of protein folding is proposed and illustrated with a lattice protein model, which has a free energy surface (FES) typical of proteins with two-state folding kinetics. The flows from the unfolded to the native state are concentrated in a limited region of the FES. The rest is occupied by a flow vortex, which does not lead to the native state. In contrast with intermediates that are associated with local minima, the vortex is not visible on the FES. The hydrodynamic interpretation thus provides new insights into the mechanism of protein folding and can be a useful complement to standard analyses.

Sergei F. Chekmarev; Andrey Yu. Palyanov; Martin Karplus

2008-01-11T23:59:59.000Z

84

Dual Axis Radiographic Hydrodynamic Test Facility | National...  

National Nuclear Security Administration (NNSA)

Dual Axis Radiographic Hydrodynamic Test Facility | National Nuclear Security Administration People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear...

85

Microsoft Word - San Diego 2004 ORT Conference paper_1.doc  

Broader source: Energy.gov (indexed) [DOE]

presented at the Third International Conference on Oxidation and Reduction Technologies for Soil and presented at the Third International Conference on Oxidation and Reduction Technologies for Soil and Groundwater in San Diego, CA, on October 24-28, 2004 PROJECT OVERVIEW: SUCCESSFUL FIELD-SCALE IN SITU THERMAL NAPL REMEDIATION ABSTRACT: The U.S. Department of Energy (DOE) successfully completed a field-scale remediation to remove non-aqueous phase liquids (NAPLs) from the subsurface at the Northeast Site on the Young-Rainey Science, Technology, and Research (STAR) Center, Largo, Florida. The Young-Rainey STAR Center is a former DOE facility that was previously known as the Pinellas Plant and the Pinellas STAR Center. The remediation project encompassed an area of 10,000 ft 2 and depths extending to 35 ft below ground surface. Prior to the remediation, DOE evaluated technologies that had the potential to remove

86

Appendix C: UC San Diego Start-Up Companies Located in California Region Total  

E-Print Network [OSTI]

Annual Sales Employees Year Started San Diego County Chuao Chocolatier, Inc. Carlsbad $1,200,000 30 2004 Genoptix Medical Laboratory Carlsbad $4,100,000 50 1999 Viasat, Inc. Carlsbad $516,566,000 1,463 1986

Wang, Deli

87

UC San Diego For A Day Lectures Available for Visitors Spring Quarter 2014  

E-Print Network [OSTI]

UC San Diego For A Day Lectures Available for Visitors Spring Quarter 2014 Day(s) Start Time End PHYS 1C Coil, Alison YORK HALL 2722 12:00 PM 12:50 PM Calculus & Analytical Geometry

Tsien, Roger Y.

88

UNIVERSITY OF CALIFORNIA, SAN DIEGO Ultracold Plasmas and Guiding Center Drift Atoms  

E-Print Network [OSTI]

UNIVERSITY OF CALIFORNIA, SAN DIEGO Ultracold Plasmas and Guiding Center Drift Atoms A dissertation Ultracold Neutral Plasmas . . . . . . . . . . . . . . . 1 1.2 Guiding Center Atoms in Magnetized Ultracold Drift Atoms . . . . . . . . . . . . . . . . . . . . . . . . 40 3.1 Abstract

California at San Diego, University of

89

Microsoft Word - DOE Congestion Workshop San Diego 12-15-11 Final  

Broader source: Energy.gov (indexed) [DOE]

Utilities Commission 16 17 MILAN BJELOGRLIC 18 Southern California Edison 19 20 BOB SMITH 21 Arizona Public Service 22 23 Panel 2 Industry: 24 25 JAN STRACK 26 San Diego Gas &...

90

E-Print Network 3.0 - artificial geomagnetic field Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Geophysics and Planetary Physics, Scripps Institution of Oceanography,University of California at San Diego Collection: Geosciences 2 Annales Geophysicae, 23, 29692974, 2005...

91

Foundation of Hydrodynamics of Strongly Interacting Systems  

E-Print Network [OSTI]

Hydrodynamics and quantum mechanics have many elements in common, as the density field and velocity fields are common variables that can be constructed in both descriptions. Starting with the Schroedinger equation and the Klein-Gordon for a single particle in hydrodynamical form, we examine the basic assumptions under which a quantum system of particles interacting through their mean fields can be described by hydrodynamics.

Cheuk-Yin Wong

2014-04-03T23:59:59.000Z

92

Disruptive Innovation in Numerical Hydrodynamics  

SciTech Connect (OSTI)

We propose the research and development of a high-fidelity hydrodynamic algorithm for tetrahedral meshes that will lead to a disruptive innovation in the numerical modeling of Laboratory problems. Our proposed innovation has the potential to reduce turnaround time by orders of magnitude relative to Advanced Simulation and Computing (ASC) codes; reduce simulation setup costs by millions of dollars per year; and effectively leverage Graphics Processing Unit (GPU) and future Exascale computing hardware. If successful, this work will lead to a dramatic leap forward in the Laboratory's quest for a predictive simulation capability.

Waltz, Jacob I. [Los Alamos National Laboratory

2012-09-06T23:59:59.000Z

93

Revisiting spherically symmetric relativistic hydrodynamics  

E-Print Network [OSTI]

In this paper we revise two classical examples of Relativistic Hydrodynamics in order to illustrate in detail the numerical methods commonly used in fluid dynamics, specifically those designed to deal with shocks, which are based on a finite volume approximation. The two cases we consider are the relativistic blast wave problem and the evolution of a Tolman-Oppenheimer-Volkoff star model, in spherical symmetry. In the first case we illustrate the implementation of relativistic Euler's equations on a fixed background space-time, whereas in the second case we also show how to couple the evolution of the fluid to the evolution of the space-time.

F. S. Guzman; F. D. Lora-Clavijo; M. D. Morales

2012-12-06T23:59:59.000Z

94

Hydrodynamic Modeling and the QGP Shear Viscosity  

E-Print Network [OSTI]

In this article, we will briefly review the recent progress on hydrodynamic modeling and the extraction of the quark-gluon plasma (QGP) specific shear viscosity with an emphasis on results obtained from the hybrid model VISHNU that couples viscous hydrodynamics for the macroscopic expansion of the QGP to the hadron cascade model for the microscopic evolution of the late hadronic stage.

Huichao Song

2012-07-10T23:59:59.000Z

95

San Diego Regional High School Science Bowl | U.S. DOE Office of Science  

Office of Science (SC) Website

San Diego Regional High San Diego Regional High School Science Bowl National Science Bowl® (NSB) NSB Home About High School High School Students High School Coaches High School Regionals High School Rules, Forms, and Resources Middle School Attending National Event Volunteers 2013 Competition Results News Media WDTS Home Contact Information National Science Bowl® U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: 202-586-6702 E: National.Science.Bowl@science.doe.gov California Regions San Diego Regional High School Science Bowl Print Text Size: A A A RSS Feeds FeedbackShare Page Regional Coordinator Information Name: Ronald Lewis Email: sandiegonobcche@earthlink.net Regional Event Information Date: Saturday, February 8, 2014 Maximum Number of Teams: 24

96

DOE Congestion Workshop, San Diego, December 15, 2011 Comments from California ISO  

Broader source: Energy.gov (indexed) [DOE]

Workshop, San Diego, December 15, 2011 Comments from California ISO Workshop, San Diego, December 15, 2011 Comments from California ISO U.S. Department of Energy National Electric Transmission Congestion Study Workshop San Diego, December 15, 2011 Questions from DOE and Comments from the California ISO Panelists have been asked to address the following questions, with emphasis as each panelist deems appropriate: 1) In its 2009 Congestion Study, DOE found that Southern California constitutes a Critical Congestion Area, that the Portland-Seattle region and the San Francisco Bay Area were congestion areas of concern, and that the Phoenix-Tucson area was no longer a congestion area of concern. The study also identified parts of the West with rich

97

Comments of San Diego Gas & Electric Company | Department of Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

files these comments in files these comments in response to the above-enumerated Request for Information noticed by the Department on May 11, 2010. SDG&E is a regulated public electric and gas utility operating pursuant to authorities granted to it by the Federal Energy Regulatory Commission and the State of California. SDG&E serves 3.4 million consumers in the San Diego and southern Orange County areas of California via 1.4 million electric meters and 830,000 gas meters. SDG&E's sister company, the Southern California Gas Company, is the nation's largest gas-distribution utility, serving another 20.3 million consumers in a 20,000 square-mile area via 5.7 million gas meters. Comments of San Diego Gas & Electric Company More Documents & Publications Comments of San Diego Gas & Electric Company

98

Hydrodynamic Testing Facilities Database | Open Energy Information  

Open Energy Info (EERE)

Hydrodynamic Testing Facilities Database Hydrodynamic Testing Facilities Database (Redirected from Hydrodynamic Testing Facilities) Jump to: navigation, search Facility Operators By viewing Hydrodynamic Testing Facilities in the list accompanying the map, one will be provided with data on a range of test capabilities and services available at commercial, academic, and government facilities and offshore berths within the United States. Click on a thumbnail in the adjacent map in order to view a testing facility operator's profile page. This page will include in depth information about the testing facilities that each operator oversees. Click on this link, CSV ,to download all of the information on all hydrodynamic testing facilities. Loading map... {"format":"googlemaps3","type":"ROADMAP","types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":5000,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"\u2026

99

Effects on the Physical Environment (Hydrodynamics, and Water...  

Broader source: Energy.gov (indexed) [DOE]

Effects on the Physical Environment (Hydrodynamics, and Water Quality Food Web) Effects on the Physical Environment (Hydrodynamics, and Water Quality Food Web) Effects on the...

100

UCRL-CONF-212699 Hydrodynamic  

National Nuclear Security Administration (NNSA)

CONF-212699 CONF-212699 Hydrodynamic test problems B. Moran June 6, 2005 Five Lab Conference Vienna, Austria June 20, 2005 through June 24, 2005 Disclaimer This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Detonation waves in relativistic hydrodynamics  

Science Journals Connector (OSTI)

This paper is concerned with an algebraic study of the equations of detonation waves in relativistic hydrodynamics taking into account the pressure and the energy of thermal radiation. A new approach to shock and detonation wavefronts is outlined. The fluid under consideration is assumed to be perfect (nonviscous and nonconducting) and to obey the following equation of state: p=(?-1)? where p, ?, and ? are the pressure, the total energy density, and the adiabatic index, respectively. The solutions of the equations of detonation waves are reduced to the problem of finding physically acceptable roots of a quadratic polynomial ?(X) where X is the ratio ?/?0 of dynamical volumes behind and ahead of the detonation wave. The existence and the locations of zeros of this polynomial allow it to be shown that if the equation of state of the burnt fluid is known then the variables characterizing the unburnt fluid obey well-defined physical relations.

Mahdy Cissoko

1992-02-15T23:59:59.000Z

102

Hydrodynamics of vibrated granular monolayer.  

SciTech Connect (OSTI)

We investigate the long-standing puzzle of phase separation in a granular monolayer vibrated from below. Although this system is three dimensional, an interesting dynamics occurs mostly in the horizontal plane, perpendicular to the direction of vibration. Experiments [Olafsen and Urbach, Phys. Rev. Lett. 81 4369 (1998)] demonstrated that for a high amplitude of vibration the system is in the gaslike phase, but when the amplitude becomes smaller than a certain threshold, a phase separation occurs: A solidlike dense condensate of particles forms in the center of the system, surrounded by particles in the gaslike phase. We explain theoretically the experimentally observed coexistence of dilute and dense phases, employing Navier-Stokes granular hydrodynamics. We show that the phase separation is associated with a negative compressibility of granular gas.

Khain, E.; Aranson, I. S. (Materials Science Division); (Oakland Univ.)

2011-01-01T23:59:59.000Z

103

Microsoft Word - DOE Congestion Workshop San Diego 12-15-11 Final  

Broader source: Energy.gov (indexed) [DOE]

UNITED STATES DEPARTMENT OF ENERGY 3 4 NATIONAL ELECTRIC TRANSMISSION CONGESTION 5 STUDY WORKSHOP 6 7 8 San Diego, California 9 Thursday, December 15, 2011 10 11 12 13 2 PARTICIPANTS: 1 Welcome and Presentation: 2 3 DAVID MEYER 4 U.S. Department of Energy 5 6 Panel 1 Regulators: 7 8 CHARLES HAINS 9 Arizona Corporation Commission 10 11 REBECCA D. WAGNER 12 Nevada Public Utilities Commission 13 14 KEITH D. WHITE 15 California Public Utilities Commission 16 17 MILAN BJELOGRLIC 18 Southern California Edison 19 20 BOB SMITH 21 Arizona Public Service 22 23 Panel 2 Industry: 24 25 JAN STRACK 26 San Diego Gas & Electric 27

104

Non abelian hydrodynamics and heavy ion collisions  

SciTech Connect (OSTI)

The goal of the relativistic heavy ion collisions (RHIC) program is to create a state of matter where color degrees of freedom are deconfined. The dynamics of matter in this state, in spite of the complexities of quantum chromodynamics, is largely determined by the conservation laws of energy momentum and color currents. Therefore it is possible to describe its main features in hydrodynamic terms, the very short color neutralization time notwithstanding. In this lecture we shall give a simple derivation of the hydrodynamics of a color charged fluid, by generalizing the usual derivation of hydrodynamics from kinetic theory to the non abelian case.

Calzetta, E. [Departamento de Fsica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and IFIBA, CONICET, Ciudad Universitaria, Buenos Aires 1428 (Argentina)

2014-01-14T23:59:59.000Z

105

University of California, San Diego UCSD-ENG-092 Fusion Division  

E-Print Network [OSTI]

injection into the chamber can not be assured. Below we report initial results of detailed thermal analysis University of California, San Diego La Jolla, CA 92093-0417 Target Thermal Response to Gas Interactions A. R. Raffray, J. Pulsifer and M. S. Tillack June 24, 2002 #12;UCSD-ENG-092 Target Thermal Response to Gas

Krstic, Miroslav

106

University of California, San Diego UCSD-ENG-097 Fusion Division  

E-Print Network [OSTI]

thermal behavior during injection. The heating threats are first characterized. The initial thermal University of California, San Diego La Jolla, CA 92093-0417 Thermal behavior and operating requirements;THERMAL BEHAVIOR AND OPERATING REQUIREMENTS OF IFE DIRECT-DRIVE TARGET A. R. Raffray1 , J. Pulsifer3 , M

Krstic, Miroslav

107

Instrucci󮠎?ica (1587) by Diego Garc?de Palacio: an early nautical handbook from Mexico  

E-Print Network [OSTI]

author. Analysis of documents written by, about, and to Diego Garca de Palacio reveals that he held positions of academic, religious, and political power in New Spain, that his motives for publishing the book were complex, and that he consulted a range...

Laanela, Erika Elizabeth

2009-05-15T23:59:59.000Z

108

The speciesenergy theory: a role for energy variability Rodolfo Carrara and Diego P. Vazquez  

E-Print Network [OSTI]

The speciesÁenergy theory: a role for energy variability Rodolfo Carrara and Diego P. Va´zquez R´ridas, CONICET, CC 507, 5500 Mendoza, Argentina, and Carrera de Doctorado en Ciencias Biolo´gicas (PROBIOL), Univ. Nacional de Cuyo, CP 33, Centro Universitario, 5500 Mendoza, Argentina. Á D. P. Va´zquez, Inst. Argentino

Vazquez, Diego

109

San Diego, California: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE)  

Broader source: Energy.gov [DOE]

This brochure provides an overview of the challenges and successes of San Diego, CA, a 2007 Solar America City awardee, on the path toward becoming a solar-powered community. Accomplishments, case studies, key lessons learned, and local resource information are given.

110

Signal Probability Based Statistical Timing Analysis University of California, San Diego  

E-Print Network [OSTI]

Signal Probability Based Statistical Timing Analysis Bao Liu University of California, San Diego propose sig- nal probability (i.e., the logic one occurrence probability on a net) based statistical estimation tech- niques are categorized as (1) static, (2) statistical, and (3) simulation and testing based

Liu, Bao

111

Frey et al. (frey@ncsu.edu) CRC North Carolina State University April 2008 San Diego  

E-Print Network [OSTI]

Frey et al. (frey@ncsu.edu) CRC North Carolina State University April 2008 San Diego Department--Board MeasurementsBoard Measurements H. Christopher FreyH. Christopher Frey ShihShih--Hao PangHao Pang William.5650J JOHN DEERE 2005 (2)Track Loader 38 7044.5455G JOHN DEERE 1994 (1)Track Loader 27 # ID Year (Tier

Frey, H. Christopher

112

San Diego Gas & Electric Company v. Sellers of Energy and Ancillary Services  

E-Print Network [OSTI]

Fact Sheet San Diego Gas & Electric Company v. Sellers of Energy and Ancillary Services Docket No. EL00-95-000 July 6, 2007 The Federal Energy Regulatory Commission today approved an $18 million uncontested settlement that resolves matters and claims related to BP Energy Company (BP) and California

Laughlin, Robert B.

113

1 Revised: May 23, 2013 UC San Diego Skaggs School of Pharmacy and Pharmaceutical Sciences  

E-Print Network [OSTI]

1 Revised: May 23, 2013 UC San Diego Skaggs School of Pharmacy and Pharmaceutical Sciences Policies and Procedures £ Does not demonstrate honesty £ Does not contribute to an atmosphere conducive to learning £ Does not treat with respect people from diverse races, genders, religions, sexual orientations

Gleeson, Joseph G.

114

SEEING 3D OBJECTS IN A SINGLE 2D IMAGE Diego Rother  

E-Print Network [OSTI]

SEEING 3D OBJECTS IN A SINGLE 2D IMAGE By Diego Rother and Guillermo Sapiro IMA Preprint SeriesD segmentation, object recognition, and 3D reconstruction from a single image is introduced in this paper. The proposed approach partitions 3D space into voxels and estimates the voxel states

115

6574 Windward Ridge Way, San Diego, CA 92121 balanceenergysolutions.com Name: Terry Mohn  

E-Print Network [OSTI]

Mohn Job Title: Chief Innovation Officer Company: Balance Energy Address: 6574 Windward Ridge Way, San Innovation Officer of Balance Energy located in San Diego California. Balance Energy engineers and builds technology strategist for the Sempra Energy utilities, with emphasis on smart grid. He specializes

116

Washout Filter Design for a Motorcycle Simulator Federico Barbagli, Diego Ferrazzin, Carlo Alberto Avizzano, Massimo Bergamasco  

E-Print Network [OSTI]

Washout Filter Design for a Motorcycle Simulator Federico Barbagli, Diego Ferrazzin, Carlo Alberto present a washout filter designed for a motorcycle simula- tor. The solution is preliminary and follows motorcycle and aircraft simu- lation are analyzed and a preliminary customized solution is proposed

Barbagli, Federico

117

Hydrodynamic Testing Facilities Database | Open Energy Information  

Open Energy Info (EERE)

Hydrodynamic Testing Facilities Database Hydrodynamic Testing Facilities Database Jump to: navigation, search Facility Operators By viewing Hydrodynamic Testing Facilities in the list accompanying the map, one will be provided with data on a range of test capabilities and services available at commercial, academic, and government facilities and offshore berths within the United States. Click on a thumbnail in the adjacent map in order to view a testing facility operator's profile page. This page will include in depth information about the testing facilities that each operator oversees. Click on this link, CSV ,to download all of the information on all hydrodynamic testing facilities. Loading map... {"format":"googlemaps3","type":"ROADMAP","types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":5000,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"\u2026

118

Vortex lines and transitions in superfluid hydrodynamics  

Science Journals Connector (OSTI)

...Preface to Vortices, dislocations, and line singularities in partial differential equations...Leslie and J. R. Ockendon. Vortex lines and transitions in superfluid hydrodynamics...nature and the motion of qunatized vortex lines. This paper illustrates the transitions...

1997-01-01T23:59:59.000Z

119

American Association for Cancer Research Genetics and Biology of Brain Cancers 2009, December 1315, 2009, San Diego, CA  

E-Print Network [OSTI]

1315, 2009, San Diego, CA Isaac Yang Linda M. Liauof California, Los Angeles, CA Mitchel S. Berger, M.D.California, San Francisco, CA Keynote session: De?ning the

Yang, Isaac; Liau, Linda M.

2010-01-01T23:59:59.000Z

120

Colorado State University Hydrodynamics | Open Energy Information  

Open Energy Info (EERE)

Hydrodynamics Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name Colorado State University Address Daryl B. Simons Building, Engineering Research Center, 1320 Campus Delivery Place Fort Collins, Colorado Zip 80523 Phone number (970) 491-8394 Website http://www.hydraulicslab.engr. Coordinates 40.575727216126°, -105.0833302192° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.575727216126,"lon":-105.0833302192,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

University of Maine Hydrodynamics | Open Energy Information  

Open Energy Info (EERE)

Hydrodynamics Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name University of Maine Address 208 Boardman Hall Place Orono, Maine Zip 04469 Sector Hydro Phone number (207) 581-2129 Website http://gradcatalog.umaine.edu/ Coordinates 44.9024546°, -68.6638413° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.9024546,"lon":-68.6638413,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

122

University of Michigan Hydrodynamics | Open Energy Information  

Open Energy Info (EERE)

Hydrodynamics Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name University of Michigan Address 1085 South University Avenue Place Ann Arbor, Michigan Zip 48109 Sector Hydro Phone number (734) 764-9432 Website http://www.engin.umich.edu/dep Coordinates 42.2757556°, -83.7362041° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.2757556,"lon":-83.7362041,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

123

Pennsylvania State University Hydrodynamics | Open Energy Information  

Open Energy Info (EERE)

State University Hydrodynamics State University Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name Pennsylvania State University Address Applied Research Laboratory, Garfield Thomas Water Tunnel, PO Box 30 Place State College, Pennsylvania Zip 16804 Sector Hydro Phone number (814) 865-1741 Website http://www.arl.psu.edu/facilit Coordinates 40.7919761°, -77.8608811° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.7919761,"lon":-77.8608811,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

124

Oregon State University Hydrodynamics | Open Energy Information  

Open Energy Info (EERE)

Oregon State University Hydrodynamics Oregon State University Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name Oregon State University Address O.H. Hinsdale Wave Research Laboratory, 220 Owen Hall Place Corvallis, Oregon Zip 97331 Sector Hydro Phone number (541) 737-3631 Website http://wave.oregonstate.edu Coordinates 44.5642722°, -123.2785942° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.5642722,"lon":-123.2785942,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

125

University of Minnesota Hydrodynamics | Open Energy Information  

Open Energy Info (EERE)

Hydrodynamics Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name University of Minnesota Address St. Anthony Falls Laboratory, 2 Third Avenue SE Place Minneapolis, MN Zip 55414 Sector Hydro Phone number (612) 624-4363 Website http://www.safl.umn.edu/ Coordinates 44.9824832°, -93.2550859° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.9824832,"lon":-93.2550859,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

126

Sandia National Laboratories Hydrodynamics | Open Energy Information  

Open Energy Info (EERE)

Laboratories Hydrodynamics Laboratories Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name Sandia National Laboratories Address P.O. Box 5800 Place Albuquerque, NM Zip 87185 Sector Hydro Website http://www.sandia.gov/vqsec/SO Coordinates 34.9799999°, -106.52° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.9799999,"lon":-106.52,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

127

Massachusetts Institute of Technology Hydrodynamics | Open Energy  

Open Energy Info (EERE)

Massachusetts Institute of Technology Hydrodynamics Massachusetts Institute of Technology Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name Massachusetts Institute of Technology Address 77 Massachusetts Avenue Place Cambridge, Massachusetts Zip 02139 Sector Hydro Phone number (617) 254-4348 Website http://web.mit.edu/towtank/www Coordinates 42.3597807°, -71.0936091° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.3597807,"lon":-71.0936091,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

128

San Diego Gas and Electric Company Smart Grid Project | Open Energy  

Open Energy Info (EERE)

and Electric Company and Electric Company Country United States Headquarters Location San Diego, California Recovery Act Funding $28115052 Total Project Value $59427645 Coverage Area Coverage Map: San Diego Gas and Electric Company Smart Grid Project Coordinates 32.7153292°, -117.1572551° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

129

Success Story: Naval Medical Center San Diego Co-Generation Project  

Broader source: Energy.gov (indexed) [DOE]

Success Story Success Story Success Story Naval Medical Center San Diego Naval Medical Center San Diego Co-Generation Project Co-Generation Project Karen Jackson, SDG&E Karen Jackson, SDG&E Project Manager Project Manager Edward Thibodo, NAVFAC SW Edward Thibodo, NAVFAC SW Energy Team Contract Energy Team Contract ' ' s Lead s Lead NAVFAC Contractor NAVFAC Contractor ' ' s Guide: s Guide:   Partnering Philosophy Partnering Philosophy - - " " We W are partners e are partners in every contract we award. Partnering is in every contract we award. Partnering is an attitude that we both work hard to an attitude that we both work hard to develop, an it requires both of us to take develop, an it requires both of us to take some extra risk and trust one another. some extra risk and trust one another.

130

Reconnaissance of geothermal resources near US naval facilities in the San Diego area, California  

SciTech Connect (OSTI)

A reconnaissance study has found little evidence of potential geothermal resources useful at naval facilities in the greater San Diego metropolitan area. However, there is a zone of modest elevated water well temperatures and slightly elevated thermal gradients that may include the eastern portion of the Imperial Beach Naval Air Station south of San Diego Bay. An increase of 0.3/sup 0/ to 0.4/sup 0/F/100 ft over the regional thermal gradient of 1.56/sup 0/F/100 ft was conservatively calculated for this zone. The thermal gradient can be used to predict 150/sup 0/F temperatures at a depth of approximately 4000 ft. This zone of greatest potential for a viable geothermal resource lies within a negative gravity anomaly thought to be caused by a tensionally developed graben, approximately centered over the San Diego Bay. Water well production in this zone is good to high, with 300 gpm often quoted as common for wells in this area. The concentration of total dissolved solids (TDS) in the deeper wells in this zone is relatively high due to intrusion of sea water. Productive geothermal wells may have to be drilled to depths economically infeasible for development of the resource in the area of discussion.

Youngs, L.G.

1984-01-01T23:59:59.000Z

131

Ship capsizing analysis using advanced hydrodynamic modelling  

Science Journals Connector (OSTI)

...hydrodynamic forces due to radiation and di raction is based...nonlinear dependence of the radiation/di raction forces...switching between the radiation coe cients (see x 5...viding us with the software Simbel, and R. Pereira...International Convention for the Safety of Life at Sea, 1974...

2000-01-01T23:59:59.000Z

132

(Non)-Dissipative Hydrodynamics on Embedded Surfaces  

E-Print Network [OSTI]

We construct the theory of dissipative hydrodynamics of uncharged fluids living on embedded space-time surfaces to first order in a derivative expansion in the case of codimension-1 surfaces (including fluid membranes) and the theory of non-dissipative hydrodynamics to second order in a derivative expansion in the case of codimension higher than one under the assumption of no angular momenta in transverse directions to the surface. This construction includes the elastic degrees of freedom, and hence the corresponding transport coefficients, that take into account transverse fluctuations of the geometry where the fluid lives. Requiring the second law of thermodynamics to be satisfied leads us to conclude that in the case of codimension-1 surfaces the stress-energy tensor is characterized by 2 hydrodynamic and 1 elastic independent transport coefficient to first order in the expansion while for codimension higher than one, and for non-dissipative flows, the stress-energy tensor is characterized by 7 hydrodynamic and 3 elastic independent transport coefficients to second order in the expansion. Furthermore, the constraints imposed between the stress-energy tensor, the bending moment and the entropy current of the fluid by these extra non-dissipative contributions are fully captured by equilibrium partition functions. This analysis constrains the Young modulus which can be measured from gravity by elastically perturbing black branes.

Jay Armas

2014-09-17T23:59:59.000Z

133

HYDRODYNAMIC ISSUES IN PAMS MANDREL TARGET FABRICATION  

SciTech Connect (OSTI)

OAK-B135 Imperfections in PAMS mandrels critically govern the quality of final ICF targets. Imperfections in the mandrels can have a wide range of origins. Here, they present observations of 3 types of imperfections, and data to support the proposal that hydrodynamic factors during the curing of the mandrel are potential causes of these imperfections.

McQUILLAN,B.W; PAGUIO,R; SUBRAMANIAN,P; TAKAGI,M; ZEBIB,A

2003-09-01T23:59:59.000Z

134

Technology Transfer Office (TTO) Promote and facilitate the transfer of UC San Diego innovations for the benefit of the University community and the public.  

E-Print Network [OSTI]

Technology Transfer Office (TTO) MISSION Promote and facilitate the transfer of UC San Diego San Diego established its Technology Transfer Office (TTO) to promote and facilitate this process TECHNOLOGY TRANSFER RESULTS FY2000 ­ FY2007 Fiscal Year 2000 2001 2002 2003 2004 2005 2006 2007 Licenses 47

Fainman, Yeshaiahu

135

San Diego 01.05.2001 Power and Particle Exhaust in ITER Slide 1 by G. Janeschitz, et.al. _______________________________________________________________________ ITER  

E-Print Network [OSTI]

San Diego 01.05.2001 Power and Particle Exhaust in ITER Slide 1 by G. Janeschitz, et.al. ITER Exhaust in ITER Slide 2 by G. Janeschitz. ITER to pump #12;San Diego; 01.05.2001 Power and Particle Exhaust in ITER Slide 3 by G. Janeschitz. ITER

136

LANL | Physics | Hydrodynamic Material Instabilities at extremes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Understanding hydrodynamic material instabilities at extremes Understanding hydrodynamic material instabilities at extremes The National Nuclear Security Administration science-based stockpile stewardship program funds research that will improve critical physics-based dynamic materials models. Los Alamos National Laboratory and Lawrence Livermore National Laboratory, as nuclear weapon design laboratories, are mandated to predict the reliability and durability of the nuclear weapons stockpile. This is done using state-of-the-art supercomputers and computer codes. It is also important to have state-of-the-art physics models in these codes. Los Alamos has theory experts in dynamic materials, thus creating powerful working groups when combined with experimental experts in Physics Division and elsewhere. Key to the science-based stockpile stewardship program is making

137

Quantum Control of Molecular Gas Hydrodynamics  

E-Print Network [OSTI]

We demonstrate that strong impulsive gas heating or heating suppression at standard temperature and pressure can occur from coherent rotational excitation or de-excitation of molecular gases using a sequence of non-ionizing laser pulses. For the case of excitation, subsequent collisional decoherence of the ensemble leads to gas heating significantly exceeding that from plasma absorption under the same laser focusing conditions. In both cases, the macroscopic hydrodynamics of the gas can be finely controlled with ~40 fs temporal sensitivity.

Zahedpour, Sina; Milchberg, Howard

2014-01-01T23:59:59.000Z

138

Cornell University Hydrodynamics | Open Energy Information  

Open Energy Info (EERE)

University Hydrodynamics University Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name Cornell University Address DeFrees Hydraulics Laboratory, School of Civil and Environmental Engineering, 2B20 Hollister Place Ithaca, New York Zip 14853 Sector Hydro Phone number (607) 255-5140 Website http://www.cee.cornell.edu/abo Coordinates 42.4467049°, -76.4830579° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.4467049,"lon":-76.4830579,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

139

Electric Demand Reduction for the U.S. Navy Public Works Center San Diego, California  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory investigated the profitability of operating a Navy ship's generators (in San Diego) during high electricity price periods rather than the ships hooking up to the Base electrical system for power. Profitability is predicated on the trade-off between the operating and maintenance cost incurred by the Navy for operating the ship generators and the net profit associated with the sale of the electric power on the spot market. In addition, PNNL assessed the use of the ship's generators as a means to achieve predicted load curtailments, which can then be marketed to the California Independent System Operator.

Kintner-Meyer, Michael CW

2000-09-30T23:59:59.000Z

140

ION NTM 2007, San Diego CA, 22-24 January 2007 1/9 Foot and Ankle Kinematics During Gait  

E-Print Network [OSTI]

ION NTM 2007, San Diego CA, 22-24 January 2007 1/9 Foot and Ankle Kinematics During Gait Using Foot of field-portable, low cost IMUs for the kinematic analysis of foot/ankle rotations. Three MEMS-based IMU phase. The results were compared against those of a landmark study in foot and ankle kinematics

Calgary, University of

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Proc. of IEEE Int. Conf. on Robotics and Automation, San Diego, CA, May 1994. Sensorless Manipulation Using Massively Parallel  

E-Print Network [OSTI]

Proc. of IEEE Int. Conf. on Robotics and Automation, San Diego, CA, May 1994. Sensorless Robert Mihailovich Noel C. MacDonald Robotics & Vision Laboratory \\Lambda School of Electrical in the Robotics and Vi­ sion Laboratory at Cornell University. Support for our robotics research is provided

Richardson, David

142

Sponsored by The Center for Research in Mathematics and Science Education and the San Diego County Office of Education  

E-Print Network [OSTI]

Sponsored by The Center for Research in Mathematics and Science Education and the San Diego County Office of Education Joseph S. Krajcik and Valerie Otero Supporting Science Teachers in Utilizing Model Free parking is adjacent to the building Joseph S. Krajcik, Professor, Science Education, Associate

Ponce, V. Miguel

143

13.024 Numerical Marine Hydrodynamics, Spring 2003  

E-Print Network [OSTI]

Introduction to numerical methods: interpolation, differentiation, integration, systems of linear equations. Solution of differential equations by numerical integration, partial differential equations of inviscid hydrodynamics: ...

Milgram, Jerome H.

144

Hydrodynamic experiment provides key data for Stockpile Stewardship  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

predictively model and assess weapon performance in the absence of full-scale underground nuclear testing," said Webster. Los Alamos hydrodynamic experiment provides key data for...

145

Fast Lattice Boltzmann Solver for Relativistic Hydrodynamics  

SciTech Connect (OSTI)

A lattice Boltzmann formulation for relativistic fluids is presented and numerically validated through quantitative comparison with recent hydrodynamic simulations of relativistic fluids. In order to illustrate its capability to handle complex geometries, the scheme is also applied to the case of a three-dimensional relativistic shock wave, generated by a supernova explosion, impacting on a massive interstellar cloud. This formulation opens up the possibility of exporting the proven advantages of lattice Boltzmann methods, namely, computational efficiency and easy handling of complex geometries, to the context of (mildly) relativistic fluid dynamics at large, from quark-gluon plasmas up to supernovae with relativistic outflows.

Mendoza, M.; Herrmann, H. J. [ETH Zuerich, Computational Physics for Engineering Materials, Institute for Building Materials, Schafmattstrasse 6, HIF, CH-8093 Zuerich (Switzerland); Boghosian, B. M. [Department of Mathematics, Tufts University, Bromfield-Pearson, Medford, Massachusetts 02155 (United States); Succi, S. [Istituto per le Applicazioni del Calcolo C.N.R., Via dei Taurini, 19 00185, Rome (Italy) and Freiburg Institute for Advanced Studies, Albertstrasse, 19, D-79104, Freiburg (Germany)

2010-07-02T23:59:59.000Z

146

Hydrodynamic and Spectral Simulations of HMXB Winds  

E-Print Network [OSTI]

We describe preliminary results of a global model of the radiatively-driven photoionized wind and accretion flow of the high-mass X-ray binary Vela X-1. The full model combines FLASH hydrodynamic calculations, XSTAR photoionization calculations, HULLAC atomic data, and Monte Carlo radiation transport. We present maps of the density, temperature, velocity, and ionization parameter from a FLASH two-dimensional time-dependent simulation of Vela X-1, as well as maps of the emissivity distributions of the X-ray emission lines.

Christopher W. Mauche; Duane A. Liedahl; Shizuka Akiyama; Tomasz Plewa

2007-04-02T23:59:59.000Z

147

La Jolla Canyon and Scripps Canyon Bibliography  

E-Print Network [OSTI]

Henry, M.J. (1976). The unconsolidated sediment distributionfan valley cut into unconsolidated sediment is encountered.water saturated and unconsolidated) surficial deposits on

Brueggeman, Peter

2009-01-01T23:59:59.000Z

148

La Jolla Canyon and Scripps Canyon Bibliography  

E-Print Network [OSTI]

said the cable was called Beal's Cable when he arrived atthe cable pre-dates 1951. Alan Beal worked for/with Francisunderwater canyons was done. Beal's Cable was laid by E.R. (

Brueggeman, Peter

2009-01-01T23:59:59.000Z

149

Relativistic hydrodynamics with quantum hadrodynamics equation of state  

Science Journals Connector (OSTI)

We derive the equation of state of the quantum hydrodynamics Lagrangian in a classical approach. The obtained equation of state is then used as input in a relativistic hydrodynamical numerical routine. Rapidity and transverse momentum distributions are calculated and compared with experimental data on heavy ion collisions obtained at the Brookhaven National Laboratory Alternating Gradient Synchrotron and the CERN Super Proton Synchrotron.

D. P. Menezes; F. S. Navarra; M. Nielsen; U. Ornik

1993-06-01T23:59:59.000Z

150

Suspended sediment and hydrodynamics above mildly sloped long wave ripples  

E-Print Network [OSTI]

Suspended sediment and hydrodynamics above mildly sloped long wave ripples Yeon S. Chang of suspended sediment and the associated hydrodynamics over mildly sloped long wave ripples on the inner shelf m. The vertical and temporal structures of the suspended sediment concentration (SSC) are consistent

Kirby, James T.

151

Hydrodynamics of three-dimensional stacked hexatic liquid crystals  

Science Journals Connector (OSTI)

The hydrodynamic equations for three-dimensional stacked hexatic liquid crystals, i.e., for hexatic-B and its tilted analogs, smectic-F and smectic-I, are presented. Differences and similarities to the hydrodynamics of smectic-A and smectic-C are discussed and the role of the additional variable characterizing the bond orientational order is elucidated.

H. Pleiner and H. R. Brand

1984-02-01T23:59:59.000Z

152

Green's functions and hydrodynamics for isotopic binary diffusion  

E-Print Network [OSTI]

We study classical binary fluid mixtures in which densities vary on very short time (ps) and length (nm) scales, such that hydrodynamics does not apply. In a pure fluid with a localized heat pulse the breakdown of hydrodynamics was overcome using Green's functions which connect the initial densities to those at later times. Numerically it appeared that for long times the results from the Green's functions would approach hydrodynamics. In this paper we extend the Green's functions theory to binary mixtures. For the case of isothermal isobaric mutual diffusion in isotopic binary mixtures and ideal binary mixtures, which is easier to handle than heat conduction yet still non-trivial, we show analytically that in the Green's function approach one recovers hydrodynamic behaviour at long time scales provided the system reaches local equilibrium at long times. This is a first step toward giving the Green's function theory a firmer basis because it can for this case be considered as an extension of hydrodynamics.

R. van Zon; E. G. D. Cohen

2005-08-10T23:59:59.000Z

153

Flow meter evaluation for U.S. Navy Public Works Center, San Diego, California  

SciTech Connect (OSTI)

The U.S. Navy Public Works Center San Diego (PWCSD) was concerned about the accuracy of various flow meters on steam and compressed air lines serving Naval facilities in San Diego, California. The flow meters had experienced various inconsistencies that had not been resolved prior to July 1993. Pacific Northwest Laboratory, Richland, Washington, evaluated the operation of 10 out of 79 steam and compressed air flow meters at PWCSD. The evaluation was limited to analysis of historical information and review of existing operating procedures. On-site investigation of the flow meters was limited to external observations of the flow-sensing equipment and a check of the flow computer program. PNL did not remove installed sensing equipment (i.e., flow meters or temperature or pressure sensors) to evaluate existing condition or check calibration. Although many of the flow meter errors can be traced to improperly normalized readings and to meters improperly compensated for temperature and pressure, lack of regular maintenance, including proper calibration, was evidenced throughout this study. A strict calibration schedule should be established for all steam and air flow meters, including calibration of the temperature sensor, pressure sensor, and flow turbine. It is recommended that the most crucial flow meters (such as the 10 evaluated in this study) be calibrated yearly. The remaining 69 flow meters could be placed on a staggered, biyearly calibration schedule. Calibration should be done by qualified personnel only. Improper calibration is often worse than no calibration at all. An outside firm is recommended to be contracted with to perform all maintenance and calibration on flow meters at the Naval facilities. Use of an outside firm would better facilitate regular, reliable calibration while removing liability for damaged parts.

Chvala, W.D. Jr.; McMordie, K.L.; Szydlowski, R.F.

1995-06-01T23:59:59.000Z

154

Sociodemographic and drug use characteristics, sex behaviors, and motivations for drug use among HIV- seronegative, heterosexual, methamphetamine users in San Diego, CA  

E-Print Network [OSTI]

South Lake Tahoe, CA, April 5-7, (oral presentation).Conference, San Francisco, CA, April, (oral presentation).Users in San Diego, CA. by Wei-Woon Susan Cheng Doctor of

Cheng, Wei-Woon Susan

2009-01-01T23:59:59.000Z

155

Our University Innovation is central to who we are and what we do at the University of California, San Diego. Here, students learn that  

E-Print Network [OSTI]

of UC San Diego's institutional DNA. More than 30 campus structures are equipped with solar panels of this total is revenue from contracts and grants, most of which is from the federal government for research 6

Hasty, Jeff

156

2013-2014 OPPORTUNITY ALLIANCE BENEFITS Partner with UC San Diego's Career Services Center and join our exclusive Opportunity Alliance at one of three  

E-Print Network [OSTI]

2013-2014 OPPORTUNITY ALLIANCE BENEFITS Partner with UC San Diego's Career Services Center and join our exclusive Opportunity Alliance at one of three levels ­ Gold, Platinum or Diamond. Boost your

Hampton, Randy

157

Dual Axis Radiographic Hydrodynamic Test Facility  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DARHT Facility: A critical component of stockpile stewardship DARHT Facility: A critical component of stockpile stewardship A new research frontier awaits! Our door is open and we thrive on mutually beneficial partnerships, collaborations that drive innovations and new technologies. April 12, 2012 Dominic Tafoya and Dave Honaberger prepare a refurbished DARHT (Dual Axis Radiographic Hydrotest Facility) 2nd axis accelerator cell for magnetic axis alignment measurements. Contact Group Leader Terry Priestley (505) 665-1330 Email Deputy Group Leader Tim Ferris (505) 665-2179 Email Hydrotests are critical in assessing nuclear weapons in nation's stockpile Dual Axis Radiographic Hydrodynamic Test facility 4:17 How DARHT Works The weapons programs at Los Alamos have one principal mission: ensure the safety, security, and effectiveness of nuclear weapons in our nation's

158

Hydrodynamical random walker with chemotactic memory  

E-Print Network [OSTI]

A three-dimensional hydrodynamical model for a micro random walker is combined with the idea of chemotactic signaling network of E. coli. Diffusion exponents, orientational correlation functions and their dependence on the geometrical and dynamical parameters of the system are analyzed numerically. Because of the chemotactic memory, the walker shows superdiffusing displacements in all directions with the largest diffusion exponent for a direction along the food gradient. Mean square displacements and orientational correlation functions show that the chemotactic memory washes out all the signatures due to the geometrical asymmetry of the walker and statistical properties are asymmetric only with respect to the direction of food gradient. For different values of the memory time, the Chemotactic index (CI) is also calculated.

H. Mohammady; B. Esckandariun; A. Najafi

2014-10-01T23:59:59.000Z

159

On some hydrodynamical aspects of quantum mechanics  

E-Print Network [OSTI]

In this note we first set up an analogy between spin and vorticity of a perfect 2d-fluid flow, based on the Borel-Weil contruction of the irreducible unitary representations of SU(2), and looking at the Madelung-Bohm velocity attached to the ensuing spin wave functions. We also show that, in the framework of finite dimensional geometric quantum mechanics, the Schr\\"odinger velocity field on projective Hilbert space is divergence-free (being Killing with respect to the Fubini-Study metric) and fulfils the stationary Euler equation, with pressure proportional to the Hamiltonian uncertainty (squared). We explicitly compute the pressure gradient of this "Schr\\"odinger fluid" and determine its critical points. Its vorticity is also calculated and shown to depend on the spacings of the energy levels. These results follow from hydrodynamical properties of Killing vector fields valid in any (finite dimensional) Riemannian manifold, of possible independent interest.

Mauro Spera

2009-02-04T23:59:59.000Z

160

An Owner's Guide to Smoothed Particle Hydrodynamics  

E-Print Network [OSTI]

We present a practical guide to Smoothed Particle Hydrodynamics (\\SPH) and its application to astrophysical problems. Although remarkably robust, \\SPH\\ must be used with care if the results are to be meaningful since the accuracy of \\SPH\\ is sensitive to the arrangement of the particles and the form of the smoothing kernel. In particular, the initial conditions for any \\SPH\\ simulation must consist of particles in dynamic equilibrium. We describe some of the numerical difficulties that may be encountered when using \\SPH, and how these may be overcome. Through our experience in using \\SPH\\ code to model convective stars, galaxy clusters and large scale structure problems we have developed many diagnostic tests. We give these here as an aid to rapid identification of errors, together with a list of basic prerequisites for the most efficient implementation of \\SPH.

T. J. Martin; F. R. Pearce; P. A. Thomas

1993-10-13T23:59:59.000Z

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Hydrodynamical random walker with chemotactic memory  

E-Print Network [OSTI]

A three-dimensional hydrodynamical model for a micro random walker is combined with the idea of chemotactic signaling network of E. coli. Diffusion exponents, orientational correlation functions and their dependence on the geometrical and dynamical parameters of the system are analyzed numerically. Because of the chemotactic memory, the walker shows superdiffusing displacements in all directions with the largest diffusion exponent for a direction along the food gradient. Mean square displacements and orientational correlation functions show that the chemotactic memory washes out all the signatures due to the geometrical asymmetry of the walker and statistical properties are asymmetric only with respect to the direction of food gradient. For different values of the memory time, the Chemotactic index (CI) is also calculated.

Mohammady, H; Najafi, A

2014-01-01T23:59:59.000Z

162

1 AUGUST 2000 1849O H L M A N N A N D S I E G E L 2000 American Meteorological Society  

E-Print Network [OSTI]

Radiant Heating. Part II: Parameterizing Solar Radiation Transmission through the Upper Ocean J. CARTER OHLMANN Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa

Siegel, David A.

163

DE-NT0005638 | netl.doe.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

oil slicks floating over MC118 site. Performers Texas A&M University - Corpus Christi, Corpus Christi, TX 78412-5844 University of California San Diego (Scripps Institute of...

164

Three fluid hydrodynamics of spin-1 Bose-Einstein condensates  

E-Print Network [OSTI]

We study excitations of the spin-1 Bose gas at finite temperatures and in the presence of a not so strong magnetic field, or equivalently, when the gas sample is partially polarized. Motivated by the success of two-fluid hydrodynamics of scalar superfluids we develop a three-fluid hydrodynamic description to treat the low frequency and long wavelength excitations of the spin-1 Bose gas. We derive the coupled linear hydrodynamic equations of the three sounds and evaluate them numerically in a self-consistent mean field approximation valid for the dilute gas at the intermediate and critical temperature regions. In this latter region we identify the critical mode.

Gergely Szirmai; Peter Szepfalusy

2011-12-14T23:59:59.000Z

165

Three fluid hydrodynamics of spin-1 Bose-Einstein condensates  

E-Print Network [OSTI]

We study excitations of the spin-1 Bose gas at finite temperatures and in the presence of a not so strong magnetic field, or equivalently, when the gas sample is partially polarized. Motivated by the success of two-fluid hydrodynamics of scalar superfluids we develop a three-fluid hydrodynamic description to treat the low frequency and long wavelength excitations of the spin-1 Bose gas. We derive the coupled linear hydrodynamic equations of the three sounds and evaluate them numerically in a self-consistent mean field approximation valid for the dilute gas at the intermediate and critical temperature regions. In this latter region we identify the critical mode.

Szirmai, Gergely

2011-01-01T23:59:59.000Z

166

DARHT: Dual-Axis Radiographic Hydrodynamic Test Facility  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DARHT: Dual-Axis Radiographic Hydrodynamic Test Facility DARHT: Dual-Axis Radiographic Hydrodynamic Test Facility DARHT: Dual-Axis Radiographic Hydrodynamic Test Facility DARHT, supports a critical component of LANL's primary mission: to ensure the safety, security, and effectiveness of nuclear weapons in our nation's stockpile. Los Alamos scientists built DARHT, the world's most powerful x-ray machine, to analyze mockups of nuclear weapons. At the Los Alamos National Laboratory (LANL), the Dual-Axis Radiographic Hydrodynamic Test Facility, or DARHT, supports a critical component of LANL's primary mission: to ensure the safety, security, and effectiveness of nuclear weapons in our nation's stockpile. Los Alamos scientists built DARHT, the world's most powerful x-ray machine, to analyze mockups of nuclear weapons.

167

Property:Hydrodynamic Testing Facility Type | Open Energy Information  

Open Energy Info (EERE)

Hydrodynamic Testing Facility Type Hydrodynamic Testing Facility Type Jump to: navigation, search Property Name Hydrodynamic Testing Facility Type Property Type Page Pages using the property "Hydrodynamic Testing Facility Type" Showing 25 pages using this property. (previous 25) (next 25) 1 1.5-ft Wave Flume Facility + Flume + 10-ft Wave Flume Facility + Flume + 11-ft Wave Flume Facility + Flume + 2 2-ft Flume Facility + Flume + 3 3-ft Wave Flume Facility + Flume + 5 5-ft Wave Flume Facility + Flume + 6 6-ft Wave Flume Facility + Flume + A Alden Large Flume + Flume + Alden Small Flume + Flume + Alden Tow Tank + Tow Tank + Alden Wave Basin + Wave Basin + B Breakwater Research Facility + Wave Basin + Bucknell Hydraulic Flume + Flume + C Carderock 2-ft Variable Pressure Cavitation Water Tunnel + Tunnel +

168

Bulk viscosity and cavitation in boost-invariant hydrodynamic expansion  

E-Print Network [OSTI]

We solve second order relativistic hydrodynamics equations for a boost-invariant 1+1-dimensional expanding fluid with an equation of state taken from lattice calculations of the thermodynamics of strongly coupled quark-gluon ...

Rajagopal, Krishna

169

Foundation of Hydrodynamics for Systems with Strong Interactions  

E-Print Network [OSTI]

For a dense and strongly interacting system, such as a nucleus or a strongly-coupled quark-gluon plasma, the foundation of hydrodynamics can be better found in the quantum description of constituents moving in the strong mean fields generated by all other particles. Using the result that the Schroedinger equation and the Klein-Gordon equation can be written in hydrodynamical forms, we find that the probability currents of the many-body system in the mean-field description obey a hydrodynamical equation with stress tensors arising from many contributions: quantum effects, mean-field interactions, and thermal fluctuations. The influence of various contributions to the hydrodynamical motion is expected to vary with the temperature, as the quantum and mean-field stress tensors playing more important roles at low and moderate temperatures.

Cheuk-Yin Wong

2010-11-30T23:59:59.000Z

170

Simulation of Wave Effect on Ship Hydrodynamics by RANSE  

Science Journals Connector (OSTI)

The application of advanced numerical methods based on the solution of RANSE and VOF equations on the prediction of ship hydrodynamics is presented. The test cases selected ... restrained and free oblique motions...

Qiuxin Gao; Dracos Vassalos

2011-01-01T23:59:59.000Z

171

Hydrodynamic analysis of mooring lines based on optical tracking experiments  

E-Print Network [OSTI]

of mooring lines on the global motions of a moored offshore platform. In the present study, an experimental investigation of the hydrodynamic characteristics of various mooring elements is implemented through free and forced oscillation tests. Since no direct...

Yang, Woo Seuk

2009-05-15T23:59:59.000Z

172

13.012 Hydrodynamics for Ocean Engineering, Fall 2002  

E-Print Network [OSTI]

Development of the fundamental equations of fluid mechanics and their simplifications for several areas of marine hydrodynamics. Application of these principles to the solution of ocean engineering problems. Topics include ...

Techet, Alexandra Hughes

173

Second-Order Accurate Method for Solving Radiation-Hydrodynamics  

E-Print Network [OSTI]

Second-order discretization for radiation-hydrodynamics is currently an area of great interest. Second-order methods used to solve the respective single-physics problems often differ fundamentally, making it difficult to combine them in a second...

Edwards, Jarrod Douglas

2013-11-12T23:59:59.000Z

174

Follow-up on the Los Alamos National Laboratory Hydrodynamic...  

Office of Environmental Management (EM)

Follow-up on the Los Alamos National Laboratory Hydrodynamic Test Program DOEIG-0930 December 2014 U.S. Department of Energy Office of Inspector General Office of Audits and...

175

EIS-0228: Dual Axis Radiographic Hydrodynamic Test (DARHT) Facility  

Broader source: Energy.gov [DOE]

This EIS evaluates the potential environmental impact of a proposal to construct and operate theDual Axis Radiographic Hydrodynamic Test (DARHT) facility at Los Alamos National Laboratory (LANL)...

176

Commutators in Quantum Hydrodynamics for Interacting Bose Systems  

Science Journals Connector (OSTI)

It is shown that the curl of the velocity operator in the second quantized version of quantum hydrodynamics for interacting Bose systems is equal to zero, thus resolving the apparent discrepancies between various existing formulations.

Robert Fanelli and R. E. Struzynski

1969-06-05T23:59:59.000Z

177

Hydrodynamics of He3 in Anisotropic A Phase  

Science Journals Connector (OSTI)

The hydrodynamic theory of mass transport in A-He3 is derived from that phase's broken symmetries and thermodynamics. First, second, and fourth sound as well as orbit waves are obtained as the normal modes.

Robert Graham

1974-12-09T23:59:59.000Z

178

An implicit Smooth Particle Hydrodynamic code  

SciTech Connect (OSTI)

An implicit version of the Smooth Particle Hydrodynamic (SPH) code SPHINX has been written and is working. In conjunction with the SPHINX code the new implicit code models fluids and solids under a wide range of conditions. SPH codes are Lagrangian, meshless and use particles to model the fluids and solids. The implicit code makes use of the Krylov iterative techniques for solving large linear-systems and a Newton-Raphson method for non-linear corrections. It uses numerical derivatives to construct the Jacobian matrix. It uses sparse techniques to save on memory storage and to reduce the amount of computation. It is believed that this is the first implicit SPH code to use Newton-Krylov techniques, and is also the first implicit SPH code to model solids. A description of SPH and the techniques used in the implicit code are presented. Then, the results of a number of tests cases are discussed, which include a shock tube problem, a Rayleigh-Taylor problem, a breaking dam problem, and a single jet of gas problem. The results are shown to be in very good agreement with analytic solutions, experimental results, and the explicit SPHINX code. In the case of the single jet of gas case it has been demonstrated that the implicit code can do a problem in much shorter time than the explicit code. The problem was, however, very unphysical, but it does demonstrate the potential of the implicit code. It is a first step toward a useful implicit SPH code.

Charles E. Knapp

2000-04-01T23:59:59.000Z

179

LLW (Low-Level Waste) Forum meeting report, February 10--13, 1998, San Diego, CA  

SciTech Connect (OSTI)

The Low-Level Radioactive Waste Forum met in San Diego, California, on February 10--13, 1998. Twenty-four Forum Participants, Alternate Forum Participants, and meeting designees representing 19 compacts, host states, and unaffiliated states participated. Additional information was provided by 19 resource people from, variously, the States of California, Colorado, and Utah; the National Governors` Association; the Department of the Army; EPA; DOE and DOE`s National Low-Level Waste Management Program; NRC; the Electric Power Research Institute and the Nuclear Energy Institute; US Ecology, Chem-Nuclear Systems, Envirocare of Utah, and Waste Control Specialists (represented by Egan and Associates); and Rocketdyne Propulsion and Power. Also in attendance, as observers, were six other state and compact officials; a staff person from DOE`s National Low-Level Waste Management Program; one NRC headquarters staff person; and seven representatives of other interested parties, including a regional generators` organization, two generators, one California anti-nuclear group, and two private companies.

NONE

1998-07-01T23:59:59.000Z

180

Lattice-Boltzmann modeling of phonon hydrodynamics  

Science Journals Connector (OSTI)

Based on the phonon Boltzmann equation, a lattice-Boltzmann model for phonon hydrodynamics is developed. Both transverse and longitudinal polarized phonons that interact through normal and umklapp processes are considered in the model. The collision term is approximated by the relaxation time model where normal and umklapp processes tend to relax distributions of phonons to their corresponding equilibrium distribution functionsthe displaced Planck distribution and the Planck distribution, respectively. A macroscopic phonon thermal wave equation (PTWE), valid for the second-sound mode, is derived through the technique of Chapman-Enskog expansion. Compared to the dual-phase-lag (DPL) -based thermal wave equation, the PTWE has an additional fourth-ordered spatial derivative term. The fundamental difference between the two models is discussed through examining a propagating thermal pulse in a single-phased medium and the transient and steady-state transport phenomena on a two-layered structure subjected to different temperatures at boundaries. Results show that transport phenomena are significantly different between the two models. The behavior exhibited by the DPL model, as thermal wave behavior goes over to diffusive behavior, ?T??q is incompatible with any microscopic phonon propagating mode. Unlike the DPL model, in which ?T only has an effect on the transient phenomena, in the PTWE model ?T shows effects on phenomena at both transient and steady state. With the intrinsic compatibility to the microscopic state, discontinuous quantities, such as a jump of temperature at a boundary or at an interface, can be calculated naturally and straightforwardly with the present lattice-Boltzmann method.

Wen-Shu Jiaung and Jeng-Rong Ho

2008-06-23T23:59:59.000Z

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Hydrodynamic construction of the electromagnetic field  

E-Print Network [OSTI]

We present an alternative Eulerian hydrodynamic model for the electromagnetic field in which the discrete vector indices in Maxwell\\s equations are replaced by continuous angular freedoms, and develop the corresponding Lagrangian picture in which the fluid particles have rotational and translational freedoms. This enables us to extend to the electromagnetic field the exact method of state construction proposed previously for spin 0 systems, in which the time-dependent wavefunction is computed from a single-valued continuum of deterministic trajectories where two spacetime points are linked by at most a single orbit. The deduction of Maxwell\\s equations from continuum mechanics is achieved by generalizing the spin 0 theory to a general Riemannian manifold from which the electromagnetic construction is extracted as a special case. In particular, the flat-space Maxwell equations are represented as a curved-space Schr\\"odinger equation for a massive system. The Lorentz covariance of the Eulerian field theory is obtained from the non-covariant Lagrangian-coordinate model as a kind of collective effect. The method makes manifest the electromagnetic analogue of the quantum potential that is tacit in Maxwell\\s equations. This implies a novel definition of the \\classical limit\\ of Maxwell\\s equations that differs from geometrical optics. It is shown that Maxwell\\s equations may be obtained by canonical quantization of the classical model. Using the classical trajectories a novel expression is derived for the propagator of the electromagnetic field in the Eulerian picture. The trajectory and propagator methods of solution are illustrated for the case of a light wave.

Peter Holland

2014-10-03T23:59:59.000Z

182

Hydrodynamic Efficiency of Ablation Propulsion with Pulsed Ion Beam  

SciTech Connect (OSTI)

This paper presents the hydrodynamic efficiency of ablation plasma produced by pulsed ion beam on the basis of the ion beam-target interaction. We used a one-dimensional hydrodynamic fluid compressible to study the physics involved namely an ablation acceleration behavior and analyzed it as a rocketlike model in order to investigate its hydrodynamic variables for propulsion applications. These variables were estimated by the concept of ablation driven implosion in terms of ablated mass fraction, implosion efficiency, and hydrodynamic energy conversion. Herein, the energy conversion efficiency of 17.5% was achieved. In addition, the results show maximum energy efficiency of the ablation process (ablation efficiency) of 67% meaning the efficiency with which pulsed ion beam energy-ablation plasma conversion. The effects of ion beam energy deposition depth to hydrodynamic efficiency were briefly discussed. Further, an evaluation of propulsive force with high specific impulse of 4000s, total impulse of 34mN and momentum to energy ratio in the range of {mu}N/W was also analyzed.

Buttapeng, Chainarong; Yazawa, Masaru; Harada, Nobuhiro [Department of Electrical Engineering, Nagaoka University of Technology, 1603-1, Kamitomioka, Nagaoka 940-2188 (Japan); Suematsu, Hisayuki; Jiang Weihua; Yatsui, Kiyoshi [Extreme Energy-Density Research Institute, Nagaoka University of Technology, 1603-1, Kamitomioka, Nagaoka 940-2188 (Japan)

2006-05-02T23:59:59.000Z

183

Nonlinear reversible hydrodynamics of the superfluid phases of He3  

Science Journals Connector (OSTI)

The nonlinear reversible hydrodynamic equations for the superfluid phases of He3, i.e., He3-A, He3-A1, He3-B, He3-A in high magnetic fields, and He3-B in high magnetic fields, are derived. The Mermin-Hotype relations for He3-A in high magnetic fields and He3-B in high magnetic fields are given for the first time. The influence of higher-order gradient terms in all phases is discussed, and a new class of nonlinear terms containing the various kinds of velocities is given which have not been considered so far for any of the five superfluid phases. In addition we show that the hydrodynamic equations for He3-A in high magnetic fields contain as a special case the hydrodynamics of superfluid He3-A1 and the orbit part of the hydrodynamic equations for He3 without external field. Furthermore, we point out some structural similarities in the equations for He3-A in high magnetic fields and He3-B in high magnetic fields. As an additional effect we find that the higher-order gradient terms imply a preferred direction in the hydrodynamic equations for superfluid He3-B.

H. Pleiner and H. Brand

1981-12-01T23:59:59.000Z

184

Assessing Thermo-Hydrodynamic-Chemical Processes at the Dixie Valley  

Open Energy Info (EERE)

Assessing Thermo-Hydrodynamic-Chemical Processes at the Dixie Valley Assessing Thermo-Hydrodynamic-Chemical Processes at the Dixie Valley Geothermal Area- A Reactive Transport Modeling Approach Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Assessing Thermo-Hydrodynamic-Chemical Processes at the Dixie Valley Geothermal Area- A Reactive Transport Modeling Approach Abstract A 2D reactive transport model of the Dixie Valley,Nevada, geothermal area was developed to assessfluid flow pathways and fluid rock interactionprocesses. Setting up the model includedspecification of the mineralogy of the different rockunits, the formulation of the corresponding mineraldissolution and precipitation reactions, the explicitdefinition of two major normal faults and thespecification of a dual continuum domain

185

University of New Hampshire Hydrodynamics | Open Energy Information  

Open Energy Info (EERE)

Hydrodynamics Hydrodynamics Jump to: navigation, search Hydro | Hydrodynamic Testing Facilities Name University of New Hampshire Address Chase Ocean Engineering Laboratory, 24 Colovos Road Place Durham, NH Zip 03824 Sector Hydro Phone number (603) 862-0672 Website http://marine.unh.edu/faciliti Coordinates 43.1362084°, -70.9387742° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.1362084,"lon":-70.9387742,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

186

Liquid friction on charged surfaces: from hydrodynamic slippage to electrokinetics  

E-Print Network [OSTI]

Hydrodynamic behavior at the vicinity of a confining wall is closely related to the friction properties of the liquid/solid interface. Here we consider, using Molecular Dynamics simulations, the electric contribution to friction for charged surfaces, and the induced modification of the hydrodynamic boundary condition at the confining boundary. The consequences of liquid slippage for electrokinetic phenomena, through the coupling between hydrodynamics and electrostatics within the electric double layer, are explored. Strong amplification of electro-osmotic effects is revealed, and the non-trivial effect of surface charge is discussed. This work allows to reconsider existing experimental data, concerning Zeta potentials of hydrophobic surfaces and suggest the possibility to generate ``giant'' electro-osmotic and electrophoretic effects, with direct applications in microfluidics.

Laurent Joly; Christophe Ybert; Emmanuel Trizac; Lyderic Bocquet

2006-07-19T23:59:59.000Z

187

Discharge convective instability as modifier of nonlinear hydrodynamic spectrum  

E-Print Network [OSTI]

Discharge source is considered as modifier of flow hydrodynamic spectrum. Characteristic frequency of nonlinear spectrum and spectrum power were determined under conditions of arc sliding discharge in supersonic flow. Two stages of discharge were defined: sliding stage and still stage. It was found that stage transition occurs due to convective instability of discharge. Fraction of sliding stage in overall discharge duration is determined by averaged current that is general stable discharge parameter. This phenomenon gives opportunity to control power of pressure fluctuations spectrum. Theoretical insight of field and hydrodynamic factors influencing on pulsations frequency was achieved. Hydrodynamic resistance of discharge region and holding cathode electric field turned out to be basic factors of frequency modification. Corresponding experimental verification was taken. Basic frequency law was determined for several discharge regimes.

Sergey Kamenshchikov

2012-04-26T23:59:59.000Z

188

Time-domain simulation of the full hydrodynamic model  

E-Print Network [OSTI]

A simple upwind discretization of the highly coupled non-linear differential equations which define the hydrodynamic model for semiconductors is given in full detail. The hydrodynamic model is able to describe inertia effects which play an increasing role in different fields of opto- and microelectronics. A silicon $n^+ - n - n^+$ - structure is simulated, using the energy-balance model and the full hydrodynamic model. Results for stationary cases are then compared, and it is pointed out where the energy-balance model, which is implemented in most of today's commercial semiconductor device simulators, fails to describe accurately the electron dynamics. Additionally, a GaAs $n^+ - n - n^+$-structure is simulated in time-domain in order to illustrate the importance of inertia effects at high frequencies in modern submicron devices.

Aste, A

2003-01-01T23:59:59.000Z

189

3-D HYDRODYNAMIC MODELING IN A GEOSPATIAL FRAMEWORK  

SciTech Connect (OSTI)

3-D hydrodynamic models are used by the Savannah River National Laboratory (SRNL) to simulate the transport of thermal and radionuclide discharges in coastal estuary systems. Development of such models requires accurate bathymetry, coastline, and boundary condition data in conjunction with the ability to rapidly discretize model domains and interpolate the required geospatial data onto the domain. To facilitate rapid and accurate hydrodynamic model development, SRNL has developed a pre- and post-processor application in a geospatial framework to automate the creation of models using existing data. This automated capability allows development of very detailed models to maximize exploitation of available surface water radionuclide sample data and thermal imagery.

Bollinger, J; Alfred Garrett, A; Larry Koffman, L; David Hayes, D

2006-08-24T23:59:59.000Z

190

Application of a panel method to hydrodynamics of underwater vehicles  

SciTech Connect (OSTI)

A low-order singularity panel method based on Green`s formulation is used to predict the hydrodynamics characteristics of underwater vehicles. The low-order modeling employs constant strength sources and doublets, and the body surface is modeled by quadrilaterals. The method is first applied to predicting the force and moment coefficients of underwater vehicles for the body-alone and finned configurations. Hydrodynamic coefficients of added mass and added moment of inertia are also calculated by modifying the code. Results for several two and three-dimensional bodies show the usefulness of the method for predicting the added mass and added moment of inertia.

Sahin, I. [Western Michigan Univ., Kalamazoo, MI (United States); Crane, J.W.; Watson, K.P. [Naval Surface Warfare Center, Panama City, FL (United States)

1994-12-31T23:59:59.000Z

191

Blockage effects on the hydrodynamic performance of a marine cross-flow turbine  

Science Journals Connector (OSTI)

...the hydrodynamic efficiency of the turbine for blockage ratios...0820.131. Turbine performance, kinetic and hydrodynamic efficiencies were only marginally...Crawford 2010 Overall efficiency of ducted tidal current turbines. In Proc. OCEANS...

2013-01-01T23:59:59.000Z

192

Lattice Boltzmann algorithm for threedimensional liquidcrystal hydrodynamics  

Science Journals Connector (OSTI)

...P. Boon and P. V. Coveney Lattice Boltzmann algorithm for three-dimensional...hydrodynamics We describe a lattice Boltzmann algorithm to simulate liquid-crystal...nematics with an imposed twist. lattice Boltzmann|liquid crystal|hydrodynamics...

2004-01-01T23:59:59.000Z

193

An impulse framework for hydrodynamic force analysis : fish propulsion, water entry of spheres, and marine propellers  

E-Print Network [OSTI]

This thesis presents an impulse framework for analyzing the hydrodynamic forces on bodies in flow. This general theoretical framework is widely applicable, and it is used to address the hydrodynamics of fish propulsion, ...

Epps, Brenden P

2010-01-01T23:59:59.000Z

194

An overview of relativistic hydrodynamics as applied to heavy ion reactions  

SciTech Connect (OSTI)

The application of relativistic hydrodynamics as applied to heavy ions is reviewed. Constraints on the nuclear equation of state, as well as the form of the hydrodynamic equations imposed by causality are discussed. Successes (flow, side-splash, scaling) and shortcomings of one-fluid hydrodynamics are reviewed. Models for pion production within hydrodynamics and reasons for disagreement with experiment are assessed. Finally, the motivations for and the implementations of multi-fluid models are presented. 74 refs., 11 figs.

Strottman, D.D.

1989-01-01T23:59:59.000Z

195

Event-by-event hydrodynamics: A better tool to study the Quark-Gluon plasma  

SciTech Connect (OSTI)

Hydrodynamics has been established as a good tool to describe many data from relativistic heavyion collisions performed at RHIC and LHC. More recently, it has become clear that it is necessary to use event-by-event hydrodynamics (i.e. describe each collision individually using hydrodynamics), an approach first developed in Brazil. In this paper, I review which data require the use of event-by-event hydrodynamics and what more we may learn on the Quark-Gluon Plasma with this.

Grassi, Frederique [Instituto de Fisica, Universidade de Sao Paulo (Brazil)

2013-03-25T23:59:59.000Z

196

Implementations and tests of Godunov-type particle hydrodynamics  

Science Journals Connector (OSTI)

......acceleration and the rate of change of the...prevents particle penetration. Furthermore...level of particle penetration. Additionally...hydrodynamic force and the rate of change of the...constant accretion rate during t collapse...show that particle penetration does not occur in......

S.-H. Cha; A. P. Whitworth

2003-03-21T23:59:59.000Z

197

Smoothed Particle Hydrodynamics in Flood Simulations Michal Chladek  

E-Print Network [OSTI]

Smoothed Particle Hydrodynamics in Flood Simulations Michal Chl´adek Comenius University we present a method for flood simulations of cities and complex models. SPH method is used- lenthaler and Pajarola 2009]. In this paper, we aim at proposing a solution for flood simulation of cities

Durikovic, Roman

198

A new shock-capturing numerical scheme for ideal hydrodynamics  

E-Print Network [OSTI]

We present a new algorithm for solving ideal relativistic hydrodynamics based on Godunov method with an exact solution of Riemann problem for an arbitrary equation of state. Standard numerical tests are executed, such as the sound wave propagation and the shock tube problem. Low numerical viscosity and high precision are attained with proper discretization.

Zuzana Feckova; Boris Tomasik

2015-01-07T23:59:59.000Z

199

A new shock-capturing numerical scheme for ideal hydrodynamics  

E-Print Network [OSTI]

We present a new algorithm for solving ideal relativistic hydrodynamics based on Godunov method with an exact solution of Riemann problem for an arbitrary equation of state. Standard numerical tests are executed, such as the sound wave propagation and the shock tube problem. Low numerical viscosity and high precision are attained with proper discretization.

Feckova, Zuzana

2015-01-01T23:59:59.000Z

200

Proc. Fifteenth IEEE Semiconductor Thermal Measurement and Management Symposium, March 9-11, 1999, San Diego CA, IEEE # 99CH36306.  

E-Print Network [OSTI]

Proc. Fifteenth IEEE Semiconductor Thermal Measurement and Management Symposium, March 9-11, 1999, San Diego CA, IEEE # 99CH36306. 74 THERMAL MANAGEMENT USING "DRY" PHASE CHANGE MATERIALS R.A. Wirtz" PCM unit conductance D Heat sink depth htr Heat of transition H Fin height Hpcm PCM mass depth kal

Wirtz, Richard A.

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Panel Session: Optimization Techniques in Voltage Collapse Analysis," IEEE PES Summer Meeting, San Diego, July 14, 1998. Applications of Optimization to Voltage Collapse Analysis  

E-Print Network [OSTI]

Panel Session: Optimization Techniques in Voltage Collapse Analysis," IEEE PES Summer Meeting, San Diego, July 14, 1998. Applications of Optimization to Voltage Collapse Analysis Claudio A. Ca|Thispaper describesseveralapplica- tions of optimization for voltage stability analysis VSA of power systems. Voltage stability prob

Cañizares, Claudio A.

202

Joint Doctoral Program in Ecology at SDSU San Diego State University offers a doctoral degree program in Ecology in cooperation with the  

E-Print Network [OSTI]

Joint Doctoral Program in Ecology at SDSU San Diego State University offers a doctoral degree program in Ecology in cooperation with the University of California at Davis. As part of this joint universities. Program Emphases Conservation and Restoration Ecology Costal Marine Ecology Ecosystem Ecology

Ponce, V. Miguel

203

Galaxies that Shine: radiation-hydrodynamical simulations of disk galaxies  

E-Print Network [OSTI]

Radiation feedback is typically implemented using subgrid recipes in hydrodynamical simulations of galaxies. Very little work has so far been performed using radiation-hydrodynamics (RHD), and there is no consensus on the importance of radiation feedback in galaxy evolution. We present RHD simulations of isolated galaxy disks of different masses with a resolution of 18 pc. Besides accounting for supernova feedback, our simulations are the first galaxy-scale simulations to include RHD treatments of photo-ionisation heating and radiation pressure, from both direct optical/UV radiation and multi-scattered, re-processed infrared (IR) radiation. Photo-heating smooths and thickens the disks and suppresses star formation about as much as the inclusion of ("thermal dump") supernova feedback does. These effects decrease with galaxy mass and are mainly due to the prevention of the formation of dense clouds, as opposed to their destruction. Radiation pressure, whether from direct or IR radiation, has little effect, but ...

Rosdahl, Joakim; Teyssier, Romain; Agertz, Oscar

2015-01-01T23:59:59.000Z

204

Development and Implementation of Radiation-Hydrodynamics Verification Test Problems  

SciTech Connect (OSTI)

Analytic solutions to the radiation-hydrodynamic equations are useful for verifying any large-scale numerical simulation software that solves the same set of equations. The one-dimensional, spherically symmetric Coggeshall No.9 and No.11 analytic solutions, cell-averaged over a uniform-grid have been developed to analyze the corresponding solutions from the Los Alamos National Laboratory Eulerian Applications Project radiation-hydrodynamics code xRAGE. These Coggeshall solutions have been shown to be independent of heat conduction, providing a unique opportunity for comparison with xRAGE solutions with and without the heat conduction module. Solution convergence was analyzed based on radial step size. Since no shocks are involved in either problem and the solutions are smooth, second-order convergence was expected for both cases. The global L1 errors were used to estimate the convergence rates with and without the heat conduction module implemented.

Marcath, Matthew J. [Los Alamos National Laboratory; Wang, Matthew Y. [Los Alamos National Laboratory; Ramsey, Scott D. [Los Alamos National Laboratory

2012-08-22T23:59:59.000Z

205

Hydrodynamic Burnett equations for inelastic Maxwell models of granular gases  

E-Print Network [OSTI]

The hydrodynamic Burnett equations and the associated transport coefficients are exactly evaluated for generalized inelastic Maxwell models. In those models, the one-particle distribution function obeys the inelastic Boltzmann equation, with a velocity-independent collision rate proportional to the $\\gamma$ power of the temperature. The pressure tensor and the heat flux are obtained to second order in the spatial gradients of the hydrodynamic fields with explicit expressions for all the Burnett transport coefficients as functions of $\\gamma$, the coefficient of normal restitution, and the dimensionality of the system. Some transport coefficients that are related in a simple way in the elastic limit become decoupled in the inelastic case. As a byproduct, existing results in the literature for three-dimensional elastic systems are recovered, and a generalization to any dimension of the system is given. The structure of the present results is used to estimate the Burnett coefficients for inelastic hard spheres.

Nagi Khalil; Vicente Garz; Andrs Santos

2014-05-06T23:59:59.000Z

206

Hydrodynamic instabilities in beryllium targets for the National Ignition Facility  

SciTech Connect (OSTI)

Beryllium ablators offer higher ablation velocity, rate, and pressure than their carbon-based counterparts, with the potential to increase the probability of achieving ignition at the National Ignition Facility (NIF) [E. I. Moses et al., Phys. Plasmas 16, 041006 (2009)]. We present here a detailed hydrodynamic stability analysis of low (NIF Revision 6.1) and high adiabat NIF beryllium target designs. Our targets are optimized to fully utilize the advantages of beryllium in order to suppress the growth of hydrodynamic instabilities. This results in an implosion that resists breakup of the capsule, and simultaneously minimizes the amount of ablator material mixed into the fuel. We quantify the improvement in stability of beryllium targets relative to plastic ones, and show that a low adiabat beryllium capsule can be at least as stable at the ablation front as a high adiabat plastic target.

Yi, S. A., E-mail: austinyi@lanl.gov; Simakov, A. N.; Wilson, D. C.; Olson, R. E.; Kline, J. L.; Batha, S. H. [Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545 (United States); Clark, D. S.; Hammel, B. A.; Milovich, J. L.; Salmonson, J. D.; Kozioziemski, B. J. [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551 (United States)

2014-09-15T23:59:59.000Z

207

Hydrodynamical Simulations of Jet- and Wind-driven Protostellar Outflows  

E-Print Network [OSTI]

We present two-dimensional hydrodynamical simulations of both jet- and wind-driven models for protostellar outflows in order to make detailed comparisons to the kinematics of observed molecular outflows. Comparing the different simulations with observations, we find that some outflows, e.g., HH 212, show features consistent with the jet-driven model, while others, e.g., VLA 05487, are consistent with the wind-driven model.

Chin-Fei Lee; James M. Stone; Eve C. Ostriker; Lee G. Mundy

2001-04-23T23:59:59.000Z

208

Hyperbolic Conservation Laws and Hydrodynamic Limit for Particle Systems  

E-Print Network [OSTI]

We study the following class of scalar hyperbolic conservation laws with discontinuous fluxes: \\partial_t\\rho+\\partial_xF(x,\\rho)=0. The main feature of such a conservation law is the discontinuity of the flux function in the space variable x. Kruzkov's approach for the L1-contraction does not apply since it requires the Lipschitz continuity of the flux function; and entropy solutions even for the Riemann problem are not unique under the classical entropy conditions. On the other hand, it is known that, in statistical mechanics, some microscopic interacting particle systems with discontinuous speed parameter lambda(x), in the hydrodynamic limit, formally lead to scalar hyperbolic conservation laws with discontinuous fluxes of the form: \\partial_t\\rho+\\partial_x(\\lambda(x)h(\\rho))=0. The natural question arises which entropy solutions the hydrodynamic limit selects, thereby leading to a suitable, physical relevant notion of entropy solutions of this class of conservation laws. This paper is a first step and provides an answer to this question for a family of discontinuous flux functions. In particular, we identify the entropy condition for our PDE and proceed to show the well-posedness by combining our existence result with a uniqueness result of Audusse-Perthame (2005) for the family of flux functions; we establish a compactness framework for the hydrodynamic limit of large particle systems and the convergence of other approximate solutions to our PDE, which is based on the notion and reduction of measure-valued entropy solutions; and we finally establish the hydrodynamic limit for a ZRP with discontinuous speed-parameter governed by an entropy solution to our PDE.

Gui-Qiang Chen; Nadine Even; Christian Klingenberg

2007-10-01T23:59:59.000Z

209

Hydrodynamic detonation instability in electroweak and QCD phase transitions  

Science Journals Connector (OSTI)

The hydrodynamic stability of deflagration and detonation bubbles for a first order electroweak and QCD phase transition has been discussed recently with the suggestion that detonations are stable. We examine here the case of a detonation more carefully. We find that in front of the bubble wall perturbations do not grow with time, but behind the wall modes exist which grow exponentially. We briefly discuss the possible meaning of this instability.

Mark Abney

1994-02-15T23:59:59.000Z

210

Relativistic hydrodynamics in the presence of puncture black holes  

SciTech Connect (OSTI)

Many of the recent numerical simulations of binary black holes in vacuum adopt the moving puncture approach. This successful approach avoids the need to impose numerical excision of the black hole interior and is easy to implement. Here we wish to explore how well the same approach can be applied to moving black hole punctures in the presence of relativistic hydrodynamic matter. First, we evolve single black hole punctures in vacuum to calibrate our Baumgarte-Shapiro-Shibata-Nakamura implementation and to confirm that the numerical solution for the exterior spacetime is invariant to any junk (i.e., constraint-violating) initial data employed in the black hole interior. Then we focus on relativistic Bondi accretion onto a moving puncture Schwarzschild black hole as a numerical test bed for our high-resolution shock-capturing relativistic hydrodynamics scheme. We find that the hydrodynamical equations can be evolved successfully in the interior without imposing numerical excision. These results help motivate the adoption of the moving puncture approach to treat the binary black hole-neutron star problem using conformal thin-sandwich initial data.

Faber, Joshua A.; Etienne, Zachariah B.; Shapiro, Stuart L.; Taniguchi, Keisuke [Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Baumgarte, Thomas W. [Department of Physics and Astronomy, Bowdoin College, Brunswick, Maine 04011 (United States)

2007-11-15T23:59:59.000Z

211

Dynamical density functional theory with hydrodynamic interactions and colloids in unstable traps  

E-Print Network [OSTI]

A density functional theory for colloidal dynamics is presented which includes hydrodynamic interactions between the colloidal particles. The theory is applied to the dynamics of colloidal particles in an optical trap which switches periodically in time from a stable to unstable confining potential. In the absence of hydrodynamic interactions, the resulting density breathing mode, exhibits huge oscillations in the trap center which are almost completely damped by hydrodynamic interactions. The predicted dynamical density fields are in good agreement with Brownian dynamics computer simulations.

M. Rex; H. Loewen

2008-03-13T23:59:59.000Z

212

Nonlinear dynamic analysis of hydrodynamically-coupled stainless steel structures  

SciTech Connect (OSTI)

Spent nuclear fuel is usually stored temporarily on the site of nuclear power plants. The spent fuel storage racks are nuclear-safety-related stainless steel structures required to be analyzed for seismic loads. When the storage pool is subjected to three-dimensional (3-D) floor seismic excitations, rack modules, stored fuel bundles, adjacent racks and pool walls, and surrounding water are hydrodynamically coupled. Hydrodynamic coupling (HC) significantly affects the dynamic responses of the racks that are free-standing and submerged in water within the pool. A nonlinear time-history dynamic analysis is usually needed to describe the motion behavior of the racks that are both geometrically nonlinear and material nonlinear in nature. The nonlinearities include the friction resistance between the rack supporting legs and the pool floor, and various potential impacts of fuel-rack, rack-rack, and rack-pool wall. The HC induced should be included in the nonlinear dynamic analysis using the added-hydrodynamic-mass concept based on potential theory per the US Nuclear Regulatory Commission (USNRC) acceptance criteria. To this end, a finite element analysis constitutes a feasible and effective tool. However, most people perform somewhat simplified 1-D, or 2-D, or 3-D single rack and 2-D multiple rack analyses. These analyses are incomplete because a 3-D single rack model behaves quite differently from a 2-D mode. Furthermore, a 3-D whole pool multi-rack model behaves differently than a 3-D single rack model, especially when the strong HC effects are unsymmetrical. In this paper 3-D nonlinear dynamic time-history analyses were performed in a more quantitative manner using sophisticated finite element models developed for a single rack as well as all twelve racks in the whole-pool. Typical response results due to different HC effects are determined and discussed.

Zhao, Y. [Battelle, Columbus, OH (United States). Engineering Mechanics Group

1996-12-01T23:59:59.000Z

213

Aspects of sensory cues and propulsion in marine zooplankton hydrodynamic disturbances.  

E-Print Network [OSTI]

??The hydrodynamic disturbances generated by two types of free-swimming, marine zooplankton were quantified experimentally in the laboratory with a novel, infrared Particle Image Velocimetry (PIV) (more)

Catton, Kimberly Bernadine

2009-01-01T23:59:59.000Z

214

Numerical and experimental study of hydrodynamics in a compartmented fluidized bed oil palm shell biomass gasifier.  

E-Print Network [OSTI]

??Numerical and experimental studies of hydrodynamic parameters of fluidized beds formed by either a single component system or a binary mixture in a pilot plant (more)

Wee, Siaw Khur

2011-01-01T23:59:59.000Z

215

Understanding the Hydrodynamics of Swimming: From Fish Fins to Flexible Propulsors for Autonomous  

E-Print Network [OSTI]

Understanding the Hydrodynamics of Swimming: From Fish Fins to Flexible Propulsors for Autonomous. The research effort described here is concerned with developing a maneuvering propulsor for an autonomous

Lauder, George V.

216

E-Print Network 3.0 - astrophysics hydrodynamical flows Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

on astrophysical jets P. M. Bellan Summary: shock driven by an out- flow from a young, low mass star. Purely hydrodynamic models in which... Miniconference on astrophysical...

217

Smoothed Particle Hydrodynamics: Things I wish my mother taught me  

E-Print Network [OSTI]

I discuss the key features of Smoothed Particle Hydrodynamics (SPH) as a numerical method - in particular the key differences between SPH and more standard grid based approaches - that are important to the practitioner. These include the exact treatment of advection, the absence of intrinsic dissipation, exact conservation and more subtle properties that arise from its Hamiltonian formulation such as the existence of a minimum energy state for the particles. The implications of each of these are discussed, showing how they can be both advantages and disadvantages.

Price, Daniel J

2011-01-01T23:59:59.000Z

218

Amendment of Presidential Permit (PP-68) San Diego Gas & Electric Company for Interconnection of Otay Mesa Generating Project to Miguel-Tijuana 230 kV Transmission Line San Diego, California  

Broader source: Energy.gov (indexed) [DOE]

Section Page S:\COMM\NEPA\TODO \EA1383\EATOC1 -R.DOC 4/1/02 -i- 1.0 INTRODUCTION 1-1 1.1 BACKGROUND 1-1 1.2 SCOPE OF PROJECT 1-2 1.3 PURPOSE AND NEED 1-3 1.4 AGENCY ACTIONS 1-3 1.4.1 Federal 1-3 1.4.1.1 U.S. Department of Energy 1-3 1.4.1.2 U.S. Fish and Wildlife Service 1-4 1.4.2 Other Agenc y Actions 1-4 1.4.2.1 California Energy Commission 1-4 1.4.2.2 California Department of Fish and Game 1-4 1.4.2.3 State Historic Preservation Office 1-5 1.4.2.4 San Diego County 1-5 2.0 PROPOSED ACTION AND ALTERNATIVES 2-1 2.1 NO ACTION ALTERNATIVE 2-1 2.2 PROPOSED ACTION 2-1 2.2.1 Proposed Amendment to Presidential Permit (PP-68) 2-2 2.2.2 Description of Proposed Project Components and Activities 2-3 2.2.2.1 Otay Mesa 230 kV Switchyard 2-3

219

Hydrodynamic model for electron-hole plasma in graphene  

E-Print Network [OSTI]

We propose a hydrodynamic model describing steady-state and dynamic electron and hole transport properties of graphene structures which accounts for the features of the electron and hole spectra. It is intended for electron-hole plasma in graphene characterized by high rate of intercarrier scattering compared to external scattering (on phonons and impurities), i.e., for intrinsic or optically pumped (bipolar plasma), and gated graphene (virtually monopolar plasma). We demonstrate that the effect of strong interaction of electrons and holes on their transport can be treated as a viscous friction between the electron and hole components. We apply the developed model for the calculations of the graphene dc conductivity, in particular, the effect of mutual drag of electrons and holes is described. The spectra and damping of collective excitations in graphene in the bipolar and monopolar limits are found. It is shown that at high gate voltages and, hence, at high electron and low hole densities (or vice-versa), the excitations are associated with the self-consistent electric field and the hydrodynamic pressure (plasma waves). In intrinsic and optically pumped graphene, the waves constitute quasineutral perturbations of the electron and hole densities (electron-hole sound waves) with the velocity being dependent only on the fundamental graphene constants.

D. Svintsov; V. Vyurkov; S. Yurchenko; T. Otsuji; V. Ryzhii

2012-01-03T23:59:59.000Z

220

A CLASS OF PHYSICALLY MOTIVATED CLOSURES FOR RADIATION HYDRODYNAMICS  

SciTech Connect (OSTI)

Radiative transfer and radiation hydrodynamics use the relativistic Boltzmann equation to describe the kinetics of photons. It is difficult to solve the six-dimensional time-dependent transfer equation unless the problem is highly symmetric or in equilibrium. When the radiation field is smooth, it is natural to take angular moments of the transfer equation to reduce the degrees of freedom. However, low order moment equations contain terms that depend on higher order moments. To close the system of moment equations, approximations are made to truncate this hierarchy. Popular closures used in astrophysics include flux-limited diffusion and the M{sub 1} closure, which are rather ad hoc and do not necessarily capture the correct physics. In this paper, we propose a new class of closures for radiative transfer and radiation hydrodynamics. We start from a different perspective and highlight the consistency of a fully relativistic formalism. We present a generic framework to approximate radiative transfer based on relativistic Grad's moment method. We then derive a 14-field method that minimizes unphysical photon self-interaction.

Chan, Chi-kwan, E-mail: ckchan@cfa.harvard.edu [Institute for Theory and Computation, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2011-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Hydrodynamic analysis of direct steam generation solar collectors  

SciTech Connect (OSTI)

Direct steam generation collectors are considered with the aim to improve the performance of a parabolic trough collector leading to a reduction of operating costs of solar electric generation systems. In this study a hydrodynamic steady state model is developed and linked with a thermal model to optimize the performance of once-through direct steam generation solar collectors. The hydrodynamic model includes flow pattern classification and a pressure drop model. Flow pattern maps for typical DSG collectors with horizontal and inclined absorber tubes are generated to investigate the variation of flow conditions with radiation level, tube diameter, tube length and flow rate. Two-phase flow frictional pressure drop correlations for the range of operating conditions in a DSG collector are selected from the wide range of published correlations by comparison with experimental data for typical steam-water flow conditions in a DSG collector. Pressure drop is calculated for different operating conditions for both horizontal and inclined solar absorber tubes. Alternative operational strategies are evaluated to achieve optimum performance of a direct steam generation collector at different radiation levels.

Odeh, S.D.; Behnia, M.; Morrison, G.L.

2000-02-01T23:59:59.000Z

222

Radiation Hydrodynamics Test Problems with Linear Velocity Profiles  

SciTech Connect (OSTI)

As an extension of the works of Coggeshall and Ramsey, a class of analytic solutions to the radiation hydrodynamics equations is derived for code verification purposes. These solutions are valid under assumptions including diffusive radiation transport, a polytropic gas equation of state, constant conductivity, separable flow velocity proportional to the curvilinear radial coordinate, and divergence-free heat flux. In accordance with these assumptions, the derived solution class is mathematically invariant with respect to the presence of radiative heat conduction, and thus represents a solution to the compressible flow (Euler) equations with or without conduction terms included. With this solution class, a quantitative code verification study (using spatial convergence rates) is performed for the cell-centered, finite volume, Eulerian compressible flow code xRAGE developed at Los Alamos National Laboratory. Simulation results show near second order spatial convergence in all physical variables when using the hydrodynamics solver only, consistent with that solver's underlying order of accuracy. However, contrary to the mathematical properties of the solution class, when heat conduction algorithms are enabled the calculation does not converge to the analytic solution.

Hendon, Raymond C. [Los Alamos National Laboratory; Ramsey, Scott D. [Los Alamos National Laboratory

2012-08-22T23:59:59.000Z

223

Hydrodynamics of rapidly rotating superfluid neutron stars with mutual friction  

E-Print Network [OSTI]

We study time evolutions of superfluid neutron stars, focussing on the nature of the oscillation spectrum, the effect of mutual friction force on the oscillations and the hydrodynamical spin-up phase of pulsar glitches. We linearise the dynamical equations of a Newtonian two-fluid model for rapidly rotating backgrounds. In the axisymmetric equilibrium configurations, the two fluid components corotate and are in beta-equilibrium. We use analytical equations of state that generate stratified and non-stratified stellar models, which enable us to study the coupling between the dynamical degrees of freedom of the system. By means of time evolutions of the linearised dynamical equations, we determine the spectrum of axisymmetric and non-axisymmetric oscillation modes, accounting for the contribution of the gravitational potential perturbations, i.e. without adopting the Cowling approximation. We study the mutual friction damping of the superfluid oscillations and consider the effects of the non-dissipative part of the mutual friction force on the mode frequencies. We also provide technical details and relevant tests for the hydrodynamical model of pulsar glitches discussed by Sidery, Passamonti and Andersson (2010). In particular, we describe the method used to generate the initial data that mimic the pre-glitch state, and derive the equations that are used to extract the gravitational-wave signal.

A. Passamonti; N. Andersson

2010-04-26T23:59:59.000Z

224

EXPLICIT-IMPLICIT SCHEME FOR RELATIVISTIC RADIATION HYDRODYNAMICS  

SciTech Connect (OSTI)

We propose an explicit-implicit scheme for numerically solving special relativistic radiation hydrodynamic equations, which ensures a conservation of total energy and momentum (matter and radiation). In our scheme, zeroth and first moment equations of the radiation transfer equation are numerically solved without employing a flux-limited diffusion approximation. For an hyperbolic term, of which the timescale is the light crossing time when the flow velocity is comparable to the speed of light, is explicitly solved using an approximate Riemann solver. Source terms describing an exchange of energy and momentum between the matter and the radiation via the gas-radiation interaction are implicitly integrated using an iteration method. The implicit scheme allows us to relax the Courant-Friedrichs-Lewy condition in optically thick media, where heating/cooling and scattering timescales could be much shorter than the dynamical timescale. We show that our numerical code can pass test problems of one- and two-dimensional radiation energy transport, and one-dimensional radiation hydrodynamics. Our newly developed scheme could be useful for a number of relativistic astrophysical problems. We also discuss how to extend our explicit-implicit scheme to the relativistic radiation magnetohydrodynamics.

Takahashi, Hiroyuki R. [Center for Computational Astrophysics, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan)] [Center for Computational Astrophysics, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Ohsuga, Ken; Tomida, Kengo [Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan)] [Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Sekiguchi, Yuichiro [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)] [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan); Inoue, Tsuyoshi, E-mail: takahashi@cfca.jp [Department of Physics and Mathematics, Aoyama Gakuin University, Fuchinobe, Sagamihara 229-8558 (Japan)] [Department of Physics and Mathematics, Aoyama Gakuin University, Fuchinobe, Sagamihara 229-8558 (Japan)

2013-02-20T23:59:59.000Z

225

Finite element simulations of hydrodynamic trapping in microfluidic particle-trap array systems  

E-Print Network [OSTI]

Finite element simulations of hydrodynamic trapping in microfluidic particle- trap array systems;Finite element simulations of hydrodynamic trapping in microfluidic particle-trap array systems Xiaoxiao) simulation is a powerful tool in the design and implementation of microfluidic systems, especially

Nehorai, Arye

226

Video Article A Microfluidic-based Hydrodynamic Trap for Single Particles  

E-Print Network [OSTI]

Video Article A Microfluidic-based Hydrodynamic Trap for Single Particles Eric M. Johnson). A Microfluidic-based Hydrodynamic Trap for Single Particles. JoVE. 47. http://www.jove.com/details.php?id=2517 and biology ranging from the molecular to cellular level. In this article, we introduce a new microfluidic

Schroeder, Charles

227

COURSE INFORMATION AND OUTLINE ORE 609 -HYDRODYNAMICS OF FLUID-BODY INTERACTION  

E-Print Network [OSTI]

IN THE ORE LIBRARY · Sarpkaya and Isaacson: Mechanics of Wave Forces on Offshore Structures · Newman: Marine Hydrodynamics · Currie: Fundamental Mechanics of Fluids · Ippen: Estuary and Coastline Hydrodynamics · Mei: The Applied Dynamics of Ocean Surface Waves · Abramowitz and Stegun: Handbook of Mathematical Functions

Frandsen, Jannette B.

228

The Hydrodynamics of Flow Stimuli Matthew J. McHenry and James C. Liao  

E-Print Network [OSTI]

motion. Although this motion can be highly complex, it emerges from just two fundamental fluid forces, Springer Handbook of Auditory Research 48, DOI 10.1007/2506_2013_13, © Springer Science+Business Media, LLC 2013 #12;2 Hydrodynamic Principles Hydrodynamic theory is concerned with the forces generated by water

McHenry, Matt

229

Hydrodynamic starvation in first-feeding larval fishes Victor Chinaa,b  

E-Print Network [OSTI]

Hydrodynamic starvation in first-feeding larval fishes Victor Chinaa,b and Roi Holzmana,b,1 York, NY, and approved April 24, 2014 (received for review December 16, 2013) Larval fishes suffer under high prey densities. Our results provide a hydrodynamic perspective on feeding of larval fishes

Einat, Aharonov

230

Exploration for stratigraphic traps in a mature hydrodynamic setting, Williston Basin, North Dakota  

SciTech Connect (OSTI)

Hydrodynamic effects on oil accumulations generally can be recognized at an early stage of exploration, but become of critical importance with increased drilling and discoveries. At the mature stage, hydrodynamic concepts readily can be applied in exploration and development to reduce risk and to increase success ratios. The south flank of the Williston basin is an example of a mature area with significant hydrodynamic effects on accumulation. Early exploration was aimed at stratigraphic traps in the Mission Canyon Formation but the development of major fields showed that all are strongly influenced by hydrodynamic flow and some may be largely independent of porosity pinchouts. Examples of hydrodynamic effects are illustrated by the Billings Nose fields, and the Elkhorn Ranch and Knutson fields. These accumulations have hydrodynamic gradients on the order of 20 ft/mi (4 m/km) or more; tilted oil-water contacts with gradient of 30 to 50 ft/mi (6 to 10 m/km); displacement of oil downdip to the northeast; and variable formation water salinities that range from nearly fresh to highly saline. Some producing zones have been described as purely hydrodynamic traps, lacking both structural and stratigraphic closure. Future success will depend on applying hydrodynamic concepts in exploration and development, and prediction methods are illustrated by possible extensions to existing one-well fields. Simple graphic techniques can estimate the limits of production before drilling, but a knowledge of local structure is most important to the interpretation.

Berg, R.R. (Texas A and M Univ., College Station (USA))

1990-05-01T23:59:59.000Z

231

Three Dimensional Numerical General Relativistic Hydrodynamics ; 1, Formulations, Methods, and Code Tests  

E-Print Network [OSTI]

This is the first in a series of papers on the construction and validation of a three-dimensional code for general relativistic hydrodynamics, and its application to general relativistic astrophysics. This paper studies the consistency and convergence of our general relativistic hydrodynamic treatment and its coupling to the spacetime evolutions described by the full set of Einstein equations with a perfect fluid source. The numerical treatment of the general relativistic hydrodynamic equations is based on high resolution shock capturing schemes. These schemes rely on the characteristic information of the system. A spectral decomposition for general relativistic hydrodynamics suitable for a general spacetime metric is presented. Evolutions based on three different approximate Riemann solvers coupled to four different discretizations of the Einstein equations are studied and compared. The coupling between the hydrodynamics and the spacetime (the right and left hand side of the Einstein equations) is carried ou...

Font, J A; Suen, W; Tobias, M

2000-01-01T23:59:59.000Z

232

Hydrodynamic forces due to waves and a current induced on a pipeline placed in an open trench  

E-Print Network [OSTI]

repairs and avoid environmental impacts resulting from pipeline failures. 8. Objectives of the Research Trenched pipelines are exposed to less hydrodynamic forces than pipelines placed on the sea floor. The hydrodynamic force variation for the pipes... repairs and avoid environmental impacts resulting from pipeline failures. 8. Objectives of the Research Trenched pipelines are exposed to less hydrodynamic forces than pipelines placed on the sea floor. The hydrodynamic force variation for the pipes...

Lee, Jaeyoung

2012-06-07T23:59:59.000Z

233

Energy dependent growth of the nucleon and hydrodynamic initial conditions  

E-Print Network [OSTI]

Due to gluon saturation, the growth of the inelastic nucleon-nucleon cross section with increasing collision energy sqrt(s) results in a broadening of the nucleon's density distribution in position space. This leads to a natural smoothing of the initial energy density distribution in the transverse plane of the matter created near midrapidity in heavy-ion collisions. We study this effect for fluctuating initial conditions generated with the Monte Carlo Kharzeev-Levin-Nardi (MC-KLN) model for Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC). We argue that at the LHC viscous hydrodynamics is applicable at earlier times than at RHIC, not only because of the higher temperature but also since the length scale over which the initial pressure fluctuates increases with collision energy.

Ulrich W. Heinz; J. Scott Moreland

2011-10-19T23:59:59.000Z

234

A method for desalination and water remediation by hydrodynamic cavitation  

Science Journals Connector (OSTI)

Water is becoming an increasingly valuable commodity with population growth demanding more and more amounts of this limited resource. Increased efforts are directed toward recycling and remediation as well as desalination of the large quantities of seawater available. Dr. Bertwin Langenecker was a pioneer in utilizing hydrodynamic cavitation in a variety of applications that would remove dissolved solids from water and other liquids. His combination of intense cavitation using a rotor-stator combination as well as simultaneously adding an adsorbent demonstrated impressive results in desalination and waste water remediation. In this presentation a description will be given of Dr. Langeneckers technology as well as a sampling of some of his most impressive results. Speculations as to why this approach works as well as it does will be presented.

2013-01-01T23:59:59.000Z

235

A method for desalination and water remediation by hydrodynamic cavitation  

Science Journals Connector (OSTI)

Water is becoming an increasingly valuable commodity with population growth demanding more and more amounts of this limited resource. Increased efforts are directed toward recycling and remediation as well as desalination of the large quantities of seawater available. Dr. Bertwin Langenecker was a pioneer in utilizing hydrodynamic cavitation in a variety of applications that would remove dissolved solids from water and other liquids. His combination of intense cavitation using a rotor-stator combination as well as simultaneously adding an adsorbent demonstrated impressive results in desalination and waste water remediation. In this presentation a description will be given of Dr. Langenecker's technology as well as a sampling of some of his most impressive results. Speculations as to why this approach works as well as it does will be presented.

Lawrence A. Crum; Michael Skinner; Scott Zeilinger

2013-01-01T23:59:59.000Z

236

Hydrodynamic Scaling Analysis of Nuclear Fusion in Hot Plasma  

E-Print Network [OSTI]

Proton beams generated by ultraintense laser pulse irradiations have potential applications in industry and in medicine. However, the laser pulse parameters are currently not optimized for practical applications. We discuss scaling laws of fusion yields generated by laser-plasma interactions. The yields are found to scale as a function of the laser power. The origin of the scaling law in the laser driven fusion yield is derived in terms of hydrodynamical scaling and it is attributed to the laser power dependence of three terms: the reaction rate, the density of the plasma and the pro- jected range of the plasma particle in the medium. The resulting scaling relations have a powerful predictive power that enables estimating the fusion yield for a nuclear reaction which has not been investigated by means of the laser accelerated ion beams.

Kimura, Sachie

2011-01-01T23:59:59.000Z

237

Heavy-ion-beaminduced hydrodynamic effects in solid targets  

Science Journals Connector (OSTI)

It is expected that after the completion of a new high current injector, the heavy-ion synchrotron (SIS) at the Gesellschaft fr Schwerionforschung (GSI) Darmstadt will accelerate U+28 ions to energies of the order of 200 MeV/u. The use of a powerful rf buncher will reduce the pulse length to about 50 ns, and employment of a multiturn injection scheme will provide 21011 particles in the beam that correspond to a total energy of the order of 1 kJ. This upgrade of the SIS, hopefully, will be completed by the end of the year 2001. These beam parameters lead to a specific power deposition of the order of 12 TW/g in solid matter that will provide temperatures of about 10 eV. Such low specific power deposition will induce hydrodynamic effects in solid materials, and one may design appropriate beam-target interaction experiments that could be used to investigate the equation of state of matter under extreme conditions. The purpose of this paper is to propose suitable target designs with optimized parameters for the future GSI experiments with the help of one and two-dimensional hydrodynamic simulations. Cylindrical geometry is the natural geometry for highly focused ion beams, and therefore cylindrical targets are the most appropriate for this type of interaction experiments. The numerical simulations presented in this paper show that one can experimentally measure the characteristic sound speed in beam heated targets which is an important physical parameter. Moreover, one can study the propagation of ion-beam-induced shock waves in the solid materials. Different values for the specific power deposition, namely, 10, 25, 50, and 100 kJ/g, have been used. In some cases the pulse length is assumed to be 40 ns while in others it is considered to be 50 ns. Various materials including lead, aluminum, and solid neon have been used.

N. A. Tahir, D. H. H. Hoffmann, J. A. Maruhn, P. Spiller, and R. Bock

1999-10-01T23:59:59.000Z

238

A SHORT HISTORY OF SIO Deborah Day, Scripps Archivist  

E-Print Network [OSTI]

. Torrey, Loye Holmes Miller, Samuel Jackson Holmes, Joseph Grinnell, Charles Atwood Kofoid, and others who

Constable, Steve

239

Bulletin of the Scripps Institution of Oceanography Bibliography  

E-Print Network [OSTI]

exploration of the North Pacific Ocean. William E. Ritter,nemerteans of the Pacific Ocean. Wesley Roswell Coe. 1954.and in the northeast Pacific Ocean, 1941-1952. Margaret King

Brueggeman, Peter

2007-01-01T23:59:59.000Z

240

Effect of Second-Order Hydrodynamics on a Floating Offshore Wind Turbine  

SciTech Connect (OSTI)

The design of offshore floating wind turbines uses design codes that can simulate the entire coupled system behavior. At the present, most codes include only first-order hydrodynamics, which induce forces and motions varying with the same frequency as the incident waves. Effects due to second- and higher-order hydrodynamics are often ignored in the offshore industry, because the forces induced typically are smaller than the first-order forces. In this report, first- and second-order hydrodynamic analysis used in the offshore oil and gas industry is applied to two different wind turbine concepts--a spar and a tension leg platform.

Roald, L.; Jonkman, J.; Robertson, A.

2014-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

A Smoothed Particle Hydrodynamics-Based Fluid Model With a Spatially...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A Smoothed Particle Hydrodynamics-Based Fluid Model With a Spatially Dependent Viscosity Authors: Martys, N.S., George, W.L., Chun, B., Lootens, D. A smoothed particle...

242

Hydrodynamic Model with Binary Particle Diameters to Predict Axial Voidage Profile in a CFB Combustor  

Science Journals Connector (OSTI)

A hydrodynamic model with binary particle diameters was developed to better predict axial voidage profile in a CFB combustor. In the model, the CFB is regarded as a superposition of two ... field data of voidage ...

J. J. Li; H. Zhang; H. R. Yang; Y. X. Wu

2010-01-01T23:59:59.000Z

243

Hydrodynamics and heat transfer during flow boiling instabilities in a single microchannel  

E-Print Network [OSTI]

Hydrodynamics and heat transfer during flow boiling instabilities in a single microchannel July 2008 Keywords: Boiling Microchannels Visualisation Flow boiling instabilities Heat transfer a b intensification heat removal. Flow boiling heat transfer in microchannel geometry and the associated flow

Aussillous, Pascale

244

Effect of More Accurate Hydrodynamic Modeling on Calculating Critical Nonlinear Ship Rolling Response  

Science Journals Connector (OSTI)

It is well known in the marine hydrodynamics field that the radiated wave force is frequency dependent. However, much work in the nonlinear marine dynamical systems field has assumed frequency independence or a c...

Srinivas Vishnubhotla; Jeffrey Falzarano

2009-01-01T23:59:59.000Z

245

Hydrodynamic effects of leading-edge tubercles on control surfaces and in flapping foil propulsion  

E-Print Network [OSTI]

This thesis investigates the hydrodynamic effects of biologically-inspired leading-edge tubercles. Two complementary studies examine the performance of three-dimensional hydrofoils based on the pectoral flippers of the ...

Stanway, Michael Jordan

2008-01-01T23:59:59.000Z

246

Experimental hydrodynamics of spherical projectiles impacting on a free surface using high speed imaging techniques  

E-Print Network [OSTI]

This thesis looks at the hydrodynamics of spherical projectiles impacting the free surface using a unique experimental WebLab facility. Experiments were performed to determine the force impact coefficients of spheres and ...

Laverty, Stephen Michael

2005-01-01T23:59:59.000Z

247

Shape-Controlled Synthesis of Hybrid Nanomaterials via Three-Dimensional Hydrodynamic Focusing  

Science Journals Connector (OSTI)

Shape-Controlled Synthesis of Hybrid Nanomaterials via Three-Dimensional Hydrodynamic Focusing ... Components of this work were conducted at the Penn State node of the NSF-funded National Nanotechnology Infrastructure Network. ...

Mengqian Lu; Shikuan Yang; Yi-Ping Ho; Christopher L. Grigsby; Kam W. Leong; Tony Jun Huang

2014-09-30T23:59:59.000Z

248

CFD study of hydrodynamic signal perception by fish using the lateral line system  

E-Print Network [OSTI]

The lateral line system on fish has been found to aid in schooling behavior, courtship communication, active and passive hydrodynamic imaging, and prey detection. The most widely used artificial prey stimulus has been the ...

Rapo, Mark Andrew

2009-01-01T23:59:59.000Z

249

Statistical Estimation of Two-Body Hydrodynamic Properties Using System Identification  

E-Print Network [OSTI]

information concerning the response characteristics of such systems. The current study demonstrates that the analysis of these data using a combination of statistical tools and system identification techniques can efficiently recover the main hydrodynamic...

Xie, Chen

2010-01-14T23:59:59.000Z

250

A concept of power generator using wind turbine, hydrodynamic retarder, and organic Rankine cycle drive  

Science Journals Connector (OSTI)

This paper describes a concept of electric power generating system that uses a wind turbine to generate kinetic energy which converts heat through a hydrodynamic retarder. The heat so generated is utilized to drive an organic Rankine cycle that converts thermal energy into electricity power for continuous and undisrupted supply during the year. A hydrodynamic retarder converts kinetic energy into heat through hot fluid by directing the flow of the fluid into the hydrodynamic retarder in a manner that resists rotation of blades of the wind turbine. The hot fluid circulating in the hydrodynamic retarder is a thermal heat source for vapor regeneration of organic heat exchange fluid mixture(s) used in the Rankine cycle. The expansion of the organic heat exchange fluid gets converted into rotation of the generator rotor.

Samuel Sami

2013-01-01T23:59:59.000Z

251

Volumetric analysis of fish swimming hydrodynamics using synthetic aperture particle image velocimetry  

E-Print Network [OSTI]

Abstract This thesis details the implementation of a three-dimensional PIV system to study the hydrodynamics of freely swimming Giant Danio (Danio aequipinnatus). Volumetric particle fields are reconstructed using synthetic ...

Mendelson, Leah Rose

2013-01-01T23:59:59.000Z

252

Impact of Channelization on Oyster Production: A Hydrodynamic-Oyster Population Model for Galveston Bay, Texas  

Science Journals Connector (OSTI)

A hydrodynamic-oyster population dynamics model was developed to assess the effect of a change in ship channel configuration under different freshwater inflow regimes and different future hydrologies on oyster (C...

John M. Klinck; Eileen E. Hofmann; Eric N. Powell

2002-12-01T23:59:59.000Z

253

Simulation and Optimization of DPP Hydrodynamics and Radiation Transport for EUV Lithography Devices  

E-Print Network [OSTI]

be used to study the hydrodynamics and radiation in two-gas mixtures of dense plasma focus (DPF) and z the HEIGHTS- EUV package are schematically shown in Figure 1: a) A dense plasma focus device, b) A hollow

Harilal, S. S.

254

The role of hydrodynamic interactions in the dynamics and viscoelasticity of actin networks  

E-Print Network [OSTI]

Actin, the primary component of the cytoskeleton, is the most studied semi-flexible filament, yet its dynamics remains elusive. We show that hydrodynamic interactions (HIs) significantly alter the time scale of actin ...

Karimi, Reza, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

255

Numerical heat conduction in hydrodynamical models of colliding hypersonic flows  

E-Print Network [OSTI]

Hydrodynamical models of colliding hypersonic flows are presented which explore the dependence of the resulting dynamics and the characteristics of the derived X-ray emission on numerical conduction and viscosity. For the purpose of our investigation we present models of colliding flow with plane-parallel and cylindrical divergence. Numerical conduction causes erroneous heating of gas across the contact discontinuity which has implications for the rate at which the gas cools. We find that the dynamics of the shocked gas and the resulting X-ray emission are strongly dependent on the contrast in the density and temperature either side of the contact discontinuity, these effects being strongest where the postshock gas of one flow behaves quasi-adiabatically while the postshock gas of the other flow is strongly radiative. Introducing additional numerical viscosity into the simulations has the effect of damping the growth of instabilities, which in some cases act to increase the volume of shocked gas and can re-he...

Parkin, E R

2010-01-01T23:59:59.000Z

256

Computer-aided design (CAD) of full hydrodynamic journal bearings  

Science Journals Connector (OSTI)

Since the equations involved in solving bearing problems are tedious to work with, calculations are most easily made by the use of bearing performance charts. However, the design of journal bearings is still a relatively cumbersome iterative process that involves the use of various data charts and tables, thus leading to time consuming and less accurate results. Therefore, a complete computer-aided design (CAD) procedure covering the basic methods for designing a full hydrodynamic journal bearing of finite length is developed and presented. The theoretical data and relevant empirical charts are collected and presented in appropriate formats. Also, the design variables of load per unit of projected bearing area, and bearing clearance in industrial applications, needed in the bearing design, are derived and incorporated in the design process. However, when designing a bearing for a given application, an infinite number of solutions is possible. Thus, certain limitations are imposed on the values of the bearing performance variables including stability, based on empirical guidelines. Consequently, one may select the solution for optimum conditions, say of maximum load capacity, or the minimum power loss (i.e. minimum friction). Finally, the CAD programme developed and constructed is general, fully automated, flexible, extendable, interactive and friendly to use.

M.H. Es-Saheb; Y.A. Al-Kalifa

2003-01-01T23:59:59.000Z

257

IUTAM symposium on hydrodynamic diffusion of suspended particles  

SciTech Connect (OSTI)

Hydrodynamic diffusion refers to the fluctuating motion of nonBrownian particles (or droplets or bubbles) which occurs in a dispersion due to multiparticle interactions. For example, in a concentrated sheared suspension, particles do not move along streamlines but instead exhibit fluctuating motions as they tumble around each other. This leads to a net migration of particles down gradients in particle concentration and in shear rate, due to the higher frequency of encounters of a test particle with other particles on the side of the test particle which has higher concentration or shear rate. As another example, suspended particles subject to sedimentation, centrifugation, or fluidization, do not generally move relative to the fluid with a constant velocity, but instead experience diffusion-like fluctuations in velocity due to interactions with neighboring particles and the resulting variation in the microstructure or configuration of the suspended particles. In flowing granular materials, the particles interact through direct collisions or contacts (rather than through the surrounding fluid); these collisions also cause the particles to undergo fluctuating motions characteristic of diffusion processes. Selected papers are indexed separately for inclusion in the Energy Science and Technology Database.

Davis, R.H. [ed.

1995-12-31T23:59:59.000Z

258

Simulation study of the effect of hydrodynamic forces on oil recovery  

E-Print Network [OSTI]

SIMULATION STUDY OF THE EFFECT OF HYDRODYNAMIC FORCES ON OIL RECOVERY A Thesis by EDUARDO ALE JANDRO IDROBO HURTADO Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1992 Major Subject: Petroleum Engineering SIMULATION STUDY OF THE EFFECT OF HYDRODYNAMIC FORCES ON OIL RECOVERY A Thesis by EDUARDO ALE JANDRO IDROBO HURTADO Approved as to style and content by: S, W. Poston (Chair...

Idrobo Hurtado, Eduardo Alejandro

2012-06-07T23:59:59.000Z

259

Help UC San Diego reach its waste diversion goals by making your next conference, seminar or training session a zero-waste event. Here's how you can ensure that your event doesn't  

E-Print Network [OSTI]

Help UC San Diego reach its waste diversion goals by making your next conference, seminar eco-friendly vendors can help you reduce waste during your event. Work with caterers to see or student intern-- who can educate participants about sustainability and encourage them to help. FACILITIES

Aluwihare, Lihini

260

DIMENSIONAL DEPENDENCE OF THE HYDRODYNAMICS OF CORE-COLLAPSE SUPERNOVAE  

SciTech Connect (OSTI)

A major goal over the last decade has been understanding which multidimensional effects are crucial in facilitating core-collapse supernova (CCSN) explosions. Unfortunately, much of this work has necessarily assumed axisymmetry. In this work, we present analyses of simplified two-dimensional (2D) and three-dimensional (3D) CCSN models with the goal of comparing the hydrodynamics in setups that differ only in dimension. Not surprisingly, we find many differences between 2D and 3D models. While some differences are subtle and perhaps not crucial, others are dramatic and make interpreting 2D models problematic. In particular, axisymmetric models produce excess power at the largest spatial scales, power that has been deemed critical in previous explosion models. Nevertheless, our 3D models, which have an order of magnitude less power than 2D models on large scales, explode earlier. Since explosions occur earlier in 3D than in 2D, the vigorous large-scale sloshing is either not critical in any dimension or the explosion mechanism operates differently in 2D and 3D. On the other hand, we find that the average parcel of matter in the gain region has been exposed to net heating for up to 30% longer in 3D than in 2D, an effect we attribute to the differing characters of turbulence in 2D and 3D. We suggest that this effect plays a prominent role in producing earlier explosions in 3D. Finally, we discuss a simple model for the runaway growth of buoyant bubbles that is able to quantitatively account for the growth of the shock radius and predicts a critical luminosity relation.

Dolence, Joshua C.; Burrows, Adam; Murphy, Jeremiah W. [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States); Nordhaus, Jason, E-mail: jdolence@astro.princeton.edu, E-mail: burrows@astro.princeton.edu, E-mail: jmurphy@astro.princeton.edu, E-mail: nordhaus@astro.rit.edu [Center for Computational Relativity and Gravitation, Rochester Institute of Technology, Rochester, NY 14623 (United States)

2013-03-10T23:59:59.000Z

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Effects of Second-Order Hydrodynamics on a Semisubmersible Floating Offshore Wind Turbine: Preprint  

SciTech Connect (OSTI)

The objective of this paper is to assess the second-order hydrodynamic effects on a semisubmersible floating offshore wind turbine. Second-order hydrodynamics induce loads and motions at the sum- and difference-frequencies of the incident waves. These effects have often been ignored in offshore wind analysis, under the assumption that they are significantly smaller than first-order effects. The sum- and difference-frequency loads can, however, excite eigenfrequencies of the system, leading to large oscillations that strain the mooring system or vibrations that cause fatigue damage to the structure. Observations of supposed second-order responses in wave-tank tests performed by the DeepCwind consortium at the MARIN offshore basin suggest that these effects might be more important than originally expected. These observations inspired interest in investigating how second-order excitation affects floating offshore wind turbines and whether second-order hydrodynamics should be included in offshore wind simulation tools like FAST in the future. In this work, the effects of second-order hydrodynamics on a floating semisubmersible offshore wind turbine are investigated. Because FAST is currently unable to account for second-order effects, a method to assess these effects was applied in which linearized properties of the floating wind system derived from FAST (including the 6x6 mass and stiffness matrices) are used by WAMIT to solve the first- and second-order hydrodynamics problems in the frequency domain. The method has been applied to the OC4-DeepCwind semisubmersible platform, supporting the NREL 5-MW baseline wind turbine. The loads and response of the system due to the second-order hydrodynamics are analysed and compared to first-order hydrodynamic loads and induced motions in the frequency domain. Further, the second-order loads and induced response data are compared to the loads and motions induced by aerodynamic loading as solved by FAST.

Bayati, I.; Jonkman, J.; Robertson, A.; Platt, A.

2014-07-01T23:59:59.000Z

262

The effects of second-order hydrodynamics on a semisubmersible floating offshore wind turbine  

Science Journals Connector (OSTI)

The objective of this paper is to assess the second-order hydrodynamic effects on a semisubmersible floating offshore wind turbine. Second-order hydrodynamics induce loads and motions at the sum- and difference-frequencies of the incident waves. These effects have often been ignored in offshore wind analysis, under the assumption that they are significantly smaller than first-order effects. The sum- and difference-frequency loads can, however, excite eigenfrequencies of a floating system, leading to large oscillations that strain the mooring system or vibrations that cause fatigue damage to the structure. Observations of supposed second-order responses in wave-tank tests performed by the DeepCwind consortium at the Maritime Research Institute Netherlands (MARIN) offshore basin suggest that these effects might be more important than originally expected. These observations inspired interest in investigating how second-order excitation affects floating offshore wind turbines and whether second-order hydrodynamics should be included in offshore wind simulation tools like FAST. In this work, the effects of second-order hydrodynamics on a floating semisubmersible offshore wind turbine are investigated. Because FAST is currently unable to account for second-order effects, a method to assess these effects was applied in which linearized properties of the floating wind system derived from FAST (including the 6x6 mass and stiffness matrices) are used by WAMIT to solve the first- and second-order hydrodynamics problems in the frequency domain. The method was applied to the Offshore Code Comparison Collaboration Continuation OC4-DeepCwind semisubmersible platform, supporting the National Renewable Energy Laboratory's 5-MW baseline wind turbine. In this paper, the loads and response of the system caused by the second-order hydrodynamics are analysed and compared to the first-order hydrodynamic loads and induced motions in the frequency domain. Further, the second-order loads and induced response data are compared to the loads and motions induced by aerodynamic loading as solved by FAST.

I Bayati; J Jonkman; A Robertson; A Platt

2014-01-01T23:59:59.000Z

263

San Diego Bay Bibliography  

E-Print Network [OSTI]

sections. Project on Heavy Metal Pollution in San Diegopollution; fresh water dilution; silt exposure; heavy metals;pollution; fresh water dilution; silt exposure; heavy metals;

Brueggeman, Peter

1994-01-01T23:59:59.000Z

264

Development of Fully Coupled Aeroelastic and Hydrodynamic Models for Offshore Wind Turbines: Preprint  

SciTech Connect (OSTI)

Aeroelastic simulation tools are routinely used to design and analyze onshore wind turbines, in order to obtain cost effective machines that achieve favorable performance while maintaining structural integrity. These tools employ sophisticated models of wind-inflow; aerodynamic, gravitational, and inertial loading of the rotor, nacelle, and tower; elastic effects within and between components; and mechanical actuation and electrical responses of the generator and of control and protection systems. For offshore wind turbines, additional models of the hydrodynamic loading in regular and irregular seas, the dynamic coupling between the support platform motions and wind turbine motions, and the dynamic characterization of mooring systems for compliant floating platforms are also important. Hydrodynamic loading includes contributions from hydrostatics, wave radiation, and wave scattering, including free surface memory effects. The integration of all of these models into comprehensive simulation tools, capable of modeling the fully coupled aeroelastic and hydrodynamic responses of floating offshore wind turbines, is presented.

Jonkman, J. M.; Sclavounos, P. D.

2006-01-01T23:59:59.000Z

265

Hydrodynamic effects on Mission Canyon (Mississippian) oil accumulations, Billings Nose area, North Dakota  

SciTech Connect (OSTI)

Mission Canyon oil production on the south flank of the Williston basin provides an example of an area in the mature stage of exploration that shows significant hydrodynamic effects on oil accumulations related to stratigraphic traps. The effects are illustrated by the Billings Nose fields and the Elkhorn Ranch field. The reservoirs have low hydraulic gradients of about 2 m/km (10 ft/mi), tilted oil-water contacts with gradients of 5 m/km (25 ft/mi), and variable formation-water salinities that range from brackish to highly saline. Oil accumulations in some zones are displayed off structure and downdip to the northeast, parallel to porosity pinch-outs. Other zones are pure hydrodynamic closure. Future success in exploration and development in the play will depend on recognizing the hydrodynamic effects and predicting oil displacement. 34 refs., 15 figs., 1 tab.

Berg, R.R. (Texas A M Univ., College Station, TX (United States)); DeMis, W.D. (Marathon Oil Co., Houston, TX (United States)); Mitsdarffer, A.R. (Dupont Environmental Remediation Services, Houston, TX (United States))

1994-04-01T23:59:59.000Z

266

R/V KNORR, KN182-7 21 August 2005 -6 October 2005  

E-Print Network [OSTI]

AAIW 2005 R/V KNORR, KN182-7 21 August 2005 - 6 October 2005 Puenta Arenas, Chile - Puerto Montt, Chile Chief Scientist: Dr. Teresa Chereskin University of California, San Diego Scripps Institution Arenas, Chile on 21 August 2005. A total of 135 LADCP/CTD/rosette stations were occupied, 399 XCTDs were

Talley, Lynne D.

267

Exploring the Science of our Oceans & Earth School Programs  

E-Print Network [OSTI]

Oceanographic Society Members San Diego Gas & Electric Sempra Energy Foundation Jeanne Bear Sleeper Takahashi of Scripps Institution of Oceanography. Program such as Sharks in the Spotlight, Energy Challenge, Earth Rocks!, and Science of the Sea focus on areas of active research, while others­ Tide-pool Treasures

Hampton, Randy

268

Atmos. Chem. Phys., 14, 1084510895, 2014 www.atmos-chem-phys.net/14/10845/2014/  

E-Print Network [OSTI]

Physics, Brazil 8Scripps Institution of Oceanography, University of California San Diego, CA, USA 9, South Africa 16University of Maryland, Joint Center for Environmental Technology, Baltimore County, MD of Colorado, Department of Chemistry & Biochemistry, Boulder, CO, USA 28King's College London, Department

Pierce, Jeffrey

269

Atmos. Chem. Phys., 14, 10845??, 2014 www.atmos-chem-phys.net/14/10845/2014/  

E-Print Network [OSTI]

Physics, Brazil 8Scripps Institution of Oceanography, University of California San Diego, CA, USA 9, South Africa 16University of Maryland, Joint Center for Environmental Technology, Baltimore County, MD of Colorado, Department of Chemistry & Biochemistry, Boulder, CO, USA 28King's College London, Department

270

October 10, 2003 22:2 Geophysical Journal International gji2064 Geophys. J. Int. (2003) 155, 609622  

E-Print Network [OSTI]

Price2 and M. J. Gillan4 1School of Earth Sciences, University of Leeds, Leeds LS2 9JT 2Research School, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093-0225, USA 4's thermal history. Calculations to date have been limited by inaccuracies in the properties of liquid iron

Alfè, Dario

271

Hydrodynamics-based floating wind turbine support platform optimization: A basis function approach  

Science Journals Connector (OSTI)

Abstract The floating wind turbine support structure design problem is complicated by conflicting technical objectives and innumerable platform geometry options. Previous support structure optimization studies have been limited in their ability to evaluate the full design space due to their adherence to certain assumptions about the physical platform configuration. The present work is an effort toward developing an alternative form of the support platform optimization problem one that abstracts details of the platform geometry and deals instead with hydrodynamic performance coefficients in order to provide a more complete and intuitive exploration of the design space. A basis function approach, which represents the design space by linearly combining the hydrodynamic performance coefficients of a diverse set of basis platform geometries, was taken as the most straightforward way of physically constraining the platform hydrodynamic performance. Candidate designs are evaluated in the frequency domain using linearized coefficients for the wind turbine, platform, and mooring system dynamics. The platform hydrodynamic coefficients are calculated according to linear hydrodynamic theory. The optimization objective is to minimize the nacelle acceleration under several operating conditions. Optimization results for a slack catenary mooring system indicate the benefits of combining submerged volume with a widely dispersed water plane area. Results for a tension leg mooring system are consistent with conventional TLP designs. The intent is to use these results as starting points for more traditional platform parameter optimization. Examination of the possible physical interpretations of linearly combining basis platform coefficients reveals that certain aspects of this approach may have poor physicality. This points to the need to expand this first attempt with more sophisticated ways of representing the constrained hydrodynamic performance variables.

Matthew Hall; Brad Buckham; Curran Crawford

2014-01-01T23:59:59.000Z

272

Hydrodynamic Stability Analysis of Burning Bubbles in Electroweak Theory and in QCD  

E-Print Network [OSTI]

Assuming that the electroweak and QCD phase transitions are first order, upon supercooling, bubbles of the new phase appear. These bubbles grow to macroscopic sizes compared to the natural scales associated with the Compton wavelengths of particle excitations. They propagate by burning the old phase into the new phase at the surface of the bubble. We study the hydrodynamic stability of the burning and find that for the velocities of interest for cosmology in the electroweak phase transition, the shape of the bubble wall is stable under hydrodynamic perturbations. Bubbles formed in the cosmological QCD phase transition are found to be a borderline case between stability and instability.

P. Huet; K. Kajantie; R. G. Leigh; B. -H. Liu; L. McLerran

1992-12-05T23:59:59.000Z

273

VOLUME 35, NUMBER 14 PHYSICAL REVIEW LETTERS 6 OCTOBER 1975 Relativistic Hydrodynamic Theory of Heavy-Ion Collisions*  

E-Print Network [OSTI]

waves and other aspects of a high-energy nuclear hydrodynamic model. ' ' Some experimental data that a conventional nuclear hydrodynamic model should be valid only when the bombarding energy per nucleon is less, Los Alamos Scientific Laboratory, University of California, Los Atamos, New Mexico 87544 (Received 11

Bertsch George F.

274

Laboratory measurement of hydrodynamic saline dispersion within a micro-fracture network induced in granite  

E-Print Network [OSTI]

Laboratory measurement of hydrodynamic saline dispersion within a micro-fracture network induced plug of Ailsa Craig micro-granite by thermal stressing, to produce an isotropic network of fractures number­dispersion relationship for the micro-fracture network is very similar to that predicted for other

275

Hydrodynamic simulations of the colliding winds in Iota Orionis Julian M. Pittard*  

E-Print Network [OSTI]

Hydrodynamic simulations of the colliding winds in Iota Orionis Julian M. Pittard* School simulations of the colliding winds in the eccentric binary Iota Orionis (HR 1889; HD 37043) have been conducted. With the inclusion of radiative driving, the realistic simulation of such a system becomes

Pittard, Julian

276

Continuous flow multi-stage microfluidic reactors via hydrodynamic microparticle railing{  

E-Print Network [OSTI]

Continuous flow multi-stage microfluidic reactors via hydrodynamic microparticle railing{ Ryan D-at-a-time). Microfluidic processors that enable multi-stage fluidic reactions with suspended microparticles (e-on-a-chip technologies. Here we present a single-layer microfluidic reactor that utilizes a microfluidic railing

Lin, Liwei

277

Hydrodynamics studies of direct-drive cone-in-shell, fast-ignitor targets on OMEGA  

E-Print Network [OSTI]

with high efficiency up to 50% has been reported7 that heat the compressed fuel, significantly easing and the compressed core and found an energy-transfer efficiency of 20­30% Refs. 5 and 6 . Hydrodynamics experiments.1,2,5 A few experiments have been performed to assess the potential of the reentrant cone concept

278

Early thermalization, hydrodynamics and energy loss in AdS/CFT  

E-Print Network [OSTI]

Gauge/gravity duality has provided unprecedented opportunities to study dynamics in certain strongly coupled gauge theories. This review aims to highlight several applications to heavy ion collisions including far-from-equilibrium dynamics, hydrodynamics and jet energy loss at strong coupling.

Chesler, Paul M

2015-01-01T23:59:59.000Z

279

Viscosity of Bacterial Suspensions: Hydrodynamic Interactions and Self-Induced Noise Shawn D. Ryan,1, 2  

E-Print Network [OSTI]

Viscosity of Bacterial Suspensions: Hydrodynamic Interactions and Self-Induced Noise Shawn D. Ryan, 2011) The viscosity of a suspension of swimming bacteria is investigated analytically and numerically fluid, result in a dramatic reduction of the effective viscosity. In agreement with experiments

Berlyand, Leonid

280

CRASH: A BLOCK-ADAPTIVE-MESH CODE FOR RADIATIVE SHOCK HYDRODYNAMICS-IMPLEMENTATION AND VERIFICATION  

SciTech Connect (OSTI)

We describe the Center for Radiative Shock Hydrodynamics (CRASH) code, a block-adaptive-mesh code for multi-material radiation hydrodynamics. The implementation solves the radiation diffusion model with a gray or multi-group method and uses a flux-limited diffusion approximation to recover the free-streaming limit. Electrons and ions are allowed to have different temperatures and we include flux-limited electron heat conduction. The radiation hydrodynamic equations are solved in the Eulerian frame by means of a conservative finite-volume discretization in either one-, two-, or three-dimensional slab geometry or in two-dimensional cylindrical symmetry. An operator-split method is used to solve these equations in three substeps: (1) an explicit step of a shock-capturing hydrodynamic solver; (2) a linear advection of the radiation in frequency-logarithm space; and (3) an implicit solution of the stiff radiation diffusion, heat conduction, and energy exchange. We present a suite of verification test problems to demonstrate the accuracy and performance of the algorithms. The applications are for astrophysics and laboratory astrophysics. The CRASH code is an extension of the Block-Adaptive Tree Solarwind Roe Upwind Scheme (BATS-R-US) code with a new radiation transfer and heat conduction library and equation-of-state and multi-group opacity solvers. Both CRASH and BATS-R-US are part of the publicly available Space Weather Modeling Framework.

Van der Holst, B.; Toth, G.; Sokolov, I. V.; Myra, E. S.; Fryxell, B.; Drake, R. P. [Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109 (United States); Powell, K. G. [Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109 (United States); Holloway, J. P. [Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109 (United States); Stout, Q. [Computer Science and Engineering, University of Michigan, Ann Arbor, MI 48109 (United States); Adams, M. L.; Morel, J. E. [Department of Nuclear Engineering, Texas A and M University, College Station, TX 77843 (United States); Karni, S. [Department of Mathematics, University of Michigan, Ann Arbor, MI 48109 (United States)

2011-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

NEUTRON IZATI ON, LEPTON ESCAPE,AND STELLAR HYDRODYNAMICS* W. David Arnett  

E-Print Network [OSTI]

NEUTRON IZATI ON, LEPTON ESCAPE,AND STELLAR HYDRODYNAMICS* W. David Arnett Enrico Fermi Institute University of Chicago 1. The Process of Neutronization.-Aftersili- con burning stellar matter has roughly equal numbers of neutrons and protons. Because neutron-star matter has a large excess of neutrons

Boyer, Edmond

282

Generalized dynamical density functional theory for classical fluids and the significance of inertia and hydrodynamic interactions  

E-Print Network [OSTI]

We study the dynamics of a colloidal fluid including inertia and hydrodynamic interactions, two effects which strongly influence the non-equilibrium properties of the system. We derive a general dynamical density functional theory (DDFT) which shows very good agreement with full Langevin dynamics. In suitable limits, we recover existing DDFTs and a Navier-Stokes-like equation with additional non-local terms.

Benjamin D. Goddard; Andreas Nold; Nikos Savva; Grigorios A. Pavliotis; Serafim Kalliadasis

2012-08-08T23:59:59.000Z

283

Efficient simulation of non-crossing fibers and chains in a hydrodynamic solvent  

E-Print Network [OSTI]

An efficient simulation method is presented for Brownian fiber suspensions, which includes both uncrossability of the fibers and hydrodynamic interactions between the fibers mediated by a mesoscopic solvent. To conserve hydrodynamics, collisions between the fibers are treated such that momentum and energy are conserved locally. The choice of simulation parameters is rationalised on the basis of dimensionless numbers expressing the relative strength of different physical processes. The method is applied to suspensions of semiflexible fibers with a contour length equal to the persistence length, and a mesh size to contour length ratio ranging from 0.055 to 0.32. For such fibers the effects of hydrodynamic interactions are observable, but relatively small. The non-crossing constraint, on the other hand, is very important and leads to hindered displacements of the fibers, with an effective tube diameter in agreement with recent theoretical predictions. The simulation technique opens the way to study the effect of viscous effects and hydrodynamic interactions in microrheology experiments where the response of an actively driven probe bead in a fiber suspension is measured.

J. T. Padding

2009-02-24T23:59:59.000Z

284

Hydrodynamic Modeling Analysis of Union Slough Restoration Project in Snohomish River, Washington  

SciTech Connect (OSTI)

A modeling study was conducted to evaluate additional project design scenarios at the Union Slough restoration/mitigation site during low tide and to provide recommendations for finish-grade elevations to achieve desired drainage. This was accomplished using the Snohomish River hydrodynamic model developed previously by PNNL.

Yang, Zhaoqing; Wang, Taiping

2010-12-20T23:59:59.000Z

285

ASPECTS OF SENSORY CUES AND PROPULSION IN MARINE ZOOPLANKTON HYDRODYNAMIC DISTURBANCES  

E-Print Network [OSTI]

ASPECTS OF SENSORY CUES AND PROPULSION IN MARINE ZOOPLANKTON HYDRODYNAMIC DISTURBANCES A Thesis Institute of Technology December 2009 #12;ASPECTS OF SENSORY CUES AND PROPULSION IN MARINE ZOOPLANKTON Peterson and his colleagues at the Hatfield Marine Station for collection and care of the Euphausia

286

Hydrodynamic analysis of AUV underwater docking with a cone-shaped dock under ocean currents  

Science Journals Connector (OSTI)

Abstract This paper investigates the hydrodynamics issues that are associated with \\{AUVs\\} (autonomous underwater vehicles) as they approach a cone-shaped dock, which is proposed by most AUV docking systems for the AUV?s protection and simplification. However, this docking system is more sensitive to the hydrodynamic interactions between the dock and the ocean currents. The purpose is to exploit the hydrodynamic susceptibility in AUV docking with the dock and to identify a probable design for AUV control during docking. To achieve this purpose, numerical simulations of an AUV docking with a dock are conducted based on the dynamic mesh method. This paper illustrates the numerical methodology for AUV docking simulation. To increase the accuracy of the numerical simulation, turbulence models and grid-dependence problems are first studied. Then, 3D (three-dimensional) numerical simulations show the dependence of the AUV fluid forces near the dock on various velocities, accelerations, dock shapes, gliding modes, cross currents from several directions and rudder angles. The hydrodynamic behaviors of an AUV docking with a dock are obtained, which provide helpful suggestions for successful docking.

Lihong Wu; Yiping Li; Shaojuan Su; Peng Yan; Yu Qin

2014-01-01T23:59:59.000Z

287

HYDRODYNAMIC LIMITS FOR KINETIC EQUATIONS AND THE DIFFUSIVE APPROXIMATION OF RADIATIVE  

E-Print Network [OSTI]

HYDRODYNAMIC LIMITS FOR KINETIC EQUATIONS AND THE DIFFUSIVE APPROXIMATION OF RADIATIVE TRANSPORT . The radiative transport equations, satisfied by the Wigner function for random acoustic waves, present#usive approximation of the radiative transport equation. 1. Introduction We consider a class of kinetic models

Tzavaras, Athanasios E.

288

HYDRODYNAMIC LIMITS FOR KINETIC EQUATIONS AND THE DIFFUSIVE APPROXIMATION OF RADIATIVE  

E-Print Network [OSTI]

HYDRODYNAMIC LIMITS FOR KINETIC EQUATIONS AND THE DIFFUSIVE APPROXIMATION OF RADIATIVE TRANSPORT of the radiative transport equation. 1. Introduction We consider a class of kinetic models equipped with a single. A general compactness frame- work is obtained for the diffusive scaling in L1 . The radiative transport

Tzavaras, Athanasios E.

289

Energy Conversion Efficiency of Nanofluidic Batteries: Hydrodynamic Slip and Access Resistance  

E-Print Network [OSTI]

Energy Conversion Efficiency of Nanofluidic Batteries: Hydrodynamic Slip and Access Resistance Yu and concentration polarization) on the energy conversion efficiency of pressure-driven electrolyte flow through battery system is its low energy conversion efficiency. Up to now, the energy conversion efficiencies have

Chang, Hsueh-Chia

290

Stability of Solutions of Hydrodynamic Equations Describing the Scaling Limit of a Massive Piston in an  

E-Print Network [OSTI]

Stability of Solutions of Hydrodynamic Equations Describing the Scaling Limit of a Massive Piston of a system con- sisting of a massive piston immersed in an ideal gas of point particles in a box. We find of a system consisting of a piston of mass M moving parallel to the x-axis in a cube containing non

Chernov, Nikolai

291

Symposium on Naval Hydrodynamics Gothenburg, Sweden, 26-31 August 2012  

E-Print Network [OSTI]

29th Symposium on Naval Hydrodynamics Gothenburg, Sweden, 26-31 August 2012 High will be dramatically different from current mainstream supercomputers in terms of computing power and parallel are demonstrated for plunging breaking waves behind a bump using 2.2 billion grid points running on thousands

Yang, Jianming

292

Quenching massive galaxies with on-the-fly feedback in cosmological hydrodynamic simulations  

Science Journals Connector (OSTI)

......tracking the dynamics of gas inflows and outflows directly...at large computational cost. Although hydrodynamic...mergers and yield hot gas in massive haloes, they...low masses in the hot-gas-quenching case may partly...shows the energy density production rate of quenching as a......

J. M. Gabor; R. Dav; B. D. Oppenheimer; K. Finlator

2011-11-11T23:59:59.000Z

293

Implosion hydrodynamics of fast ignition targetsa... R. B. Stephens,1,b  

E-Print Network [OSTI]

. In the initial concept2 the ignition pulse is provided by an ultrahigh-intensity laser that bores into the lowerImplosion hydrodynamics of fast ignition targetsa... R. B. Stephens,1,b S. P. Hatchett,2 M. Tabak,2 National Laboratory, Livermore, California 94550 3 Laboratory for Laser Energetics, University of Rochester

294

Hydrodynamic and water quality river basin modeling using CE-QUAL-W2 version 3  

E-Print Network [OSTI]

-dimensional (longitudinal-vertical) water quality and hydrodynamic computer simulation model that was originally developed of the Lower Snake River in the Northwestern USA; the Bull Run River basin composed of 3 water supply and computes water levels, horizontal and vertical velocities, temperature, and 21 other water quality

Wells, Scott A.

295

Comparing galactic satellite properties in hydrodynamical and N-body simulations  

Science Journals Connector (OSTI)

......These high-resolution runs are 83 times more resolved...207/202 102/110 To run the DM only counterparts...intimately related with gasoline which is its hydrodynamical...algorithms), allowing a straight, direct comparison of...those used for the hydro runs; we simply transform......

Jascha A. Schewtschenko; Andrea V. Macci

2011-05-11T23:59:59.000Z

296

Hydrodynamic Coefficients and Wave Loads for a WEC Device in Heaving Mode  

E-Print Network [OSTI]

. This model is intended to be used for WEC control purposes. A semi-analytical approach is therefore proposed for the computation of the hydrodynamic coefficients and the excitation forces. The boundary value problem is solved--Wave Energy Converter, potential theory, eigen- function expansion, wave-loads, heaving mode, scattering

Paris-Sud XI, Université de

297

A pulsed power hydrodynamics approach to exploring properties of warm dense matter  

SciTech Connect (OSTI)

Pulsed Power Hydrodynamics, as an application of low-impedance, pulsed power, and high magnetic field technology developed over the last decade to study advanced hydrodynamic problems, instabilities, turbulence, and material properties, can potentially be applied to the study of the behavior and properties of warm dense matter (WDM) as well. Exploration of the properties, such as equation of state and conductivity, of warm dense matter is an emerging area of study focused on the behavior of matter at density near solid density (from 10% of solid density to a few times solid density) and modest temperatures ({approx}1-10 eV). Warm dense matter conditions can be achieved by laser or particle beam heating of very small quantities of matter on timescales short compared to the subsequent hydrodynamic expansion timescales (isochoric heating) and a vigorous community of researchers is applying these techniques using petawatt scale laser systems, but the microscopic size scale of the WDM produced in this way limits access to some physics phenomena. Pulsed power hydrodynamics techniques, either through high convergence liner compression of a large volume, modest density, low temperature plasma to densities approaching solid density or through the explosion and subsequent expansion of a conductor (wire) against a high pressure (density) gas background (isobaric expansion) techniques both offer the prospect for producing warm dense matter in macroscopic quantities. However, both techniques demand substantial energy, proper power conditioning and delivery, and an understanding of the hydrodynamic and instability processes that limit each technique. Similarly, liner compression of normal density material, perhaps using multiple reflected shocks can provide access to the challenging region above normal density -- again with the requirement of very large amounts of driving energy. In this paper we will provide an introduction to techniques that might be applied to explore this interesting new application of the energy-rich technology of pulse power and high magnetic fields.

Reinovsky, Robert Emil [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

298

Hybrid Characteristics: 3D radiative transfer for parallel adaptive mesh refinement hydrodynamics  

E-Print Network [OSTI]

We have developed a three-dimensional radiative transfer method designed specifically for use with parallel adaptive mesh refinement hydrodynamics codes. This new algorithm, which we call hybrid characteristics, introduces a novel form of ray tracing that can neither be classified as long, nor as short characteristics, but which applies the underlying principles, i.e. efficient execution through interpolation and parallelizability, of both. Primary applications of the hybrid characteristics method are radiation hydrodynamics problems that take into account the effects of photoionization and heating due to point sources of radiation. The method is implemented in the hydrodynamics package FLASH. The ionization, heating, and cooling processes are modelled using the DORIC ionization package. Upon comparison with the long characteristics method, we find that our method calculates the column density with a similarly high accuracy and produces sharp and well defined shadows. We show the quality of the new algorithm in an application to the photoevaporation of multiple over-dense clumps. We present several test problems demonstrating the feasibility of our method for performing high resolution three-dimensional radiation hydrodynamics calculations that span a large range of scales. Initial performance tests show that the ray tracing part of our method takes less time to execute than other parts of the calculation (e.g. hydrodynamics and adaptive mesh refinement), and that a high degree of efficiency is obtained in parallel execution. Although the hybrid characteristics method is developed for problems involving photoionization due to point sources, the algorithm can be easily adapted to the case of more general radiation fields.

Erik-Jan Rijkhorst; Tomasz Plewa; Anshu Dubey; Garrelt Mellema

2005-05-10T23:59:59.000Z

299

Three Dimensional Numerical General Relativistic Hydrodynamics I: Formulations, Methods, and Code Tests  

E-Print Network [OSTI]

This is the first in a series of papers on the construction and validation of a three-dimensional code for general relativistic hydrodynamics, and its application to general relativistic astrophysics. This paper studies the consistency and convergence of our general relativistic hydrodynamic treatment and its coupling to the spacetime evolutions described by the full set of Einstein equations with a perfect fluid source. The numerical treatment of the general relativistic hydrodynamic equations is based on high resolution shock capturing schemes. These schemes rely on the characteristic information of the system. A spectral decomposition for general relativistic hydrodynamics suitable for a general spacetime metric is presented. Evolutions based on three different approximate Riemann solvers coupled to four different discretizations of the Einstein equations are studied and compared. The coupling between the hydrodynamics and the spacetime (the right and left hand side of the Einstein equations) is carried out in a treatment which is second order accurate in {\\it both} space and time. Convergence tests for all twelve combinations with a variety of test beds are studied, showing consistency with the differential equations and correct convergence properties. The test-beds examined include shocktubes, Friedmann-Robertson-Walker cosmology tests, evolutions of self-gravitating compact (TOV) stars, and evolutions of relativistically boosted TOV stars. Special attention is paid to the numerical evolution of strongly gravitating objects, e.g., neutron stars, in the full theory of general relativity, including a simple, yet effective treatment for the surface region of the star (where the rest mass density is abruptly dropping to zero).

J. A. Font; M. Miller; W. Suen; M. Tobias

1998-11-04T23:59:59.000Z

300

MHK Projects/Marine Hydrodynamics Laboratory at the University of Michigan  

Open Energy Info (EERE)

Marine Hydrodynamics Laboratory at the University of Michigan Marine Hydrodynamics Laboratory at the University of Michigan < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.2808,"lon":-83.743,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Viscosity of bacterial suspensions : hydrodynamic interactions and self-induced noise.  

SciTech Connect (OSTI)

The viscosity of a suspension of swimming bacteria is investigated analytically and numerically. We propose a simple model that allows for efficient computation for a large number of bacteria. Our calculations show that long-range hydrodynamic interactions, intrinsic to self-locomoting objects in a viscous fluid, result in a dramatic reduction of the effective viscosity. In agreement with experiments on suspensions of Bacillus subtilis, we show that the viscosity reduction is related to the onset of large-scale collective motion due to interactions between the swimmers. The simulations reveal that the viscosity reduction occurs only for relatively low concentrations of swimmers: Further increases of the concentration yield an increase of the viscosity. We derive an explicit asymptotic formula for the effective viscosity in terms of known physical parameters and show that hydrodynamic interactions are manifested as self-induced noise in the absence of any explicit stochasticity in the system.

Ryan, S. D.; Haines, B. M.; Berlyand, L. V.; Ziebert, F.; Aranson, I. S. (Materials Science Division); (Pennsylvania State Univ.); (UMR CNRS)

2011-05-01T23:59:59.000Z

302

Modeling the coupling of reaction kinetics and hydrodynamics in a collapsing cavity  

SciTech Connect (OSTI)

We introduce a model of cavitation based on the multiphase Lattice Boltzmann method (LBM) that allows for coupling between the hydrodynamics of a collapsing cavity and supported solute chemical species. We demonstrate that this model can also be coupled to deterministic or stochastic chemical reactions. In a two-species model of chemical reactions (with a major and a minor specie), the major difference observed between the deterministic and stochastic reactions takes the form of random fluctuations in concentration of the minor species. We demonstrate that advection associated with the hydrodynamics of a collapsing cavity leads to highly inhomogeneous concentration of solutes. In turn these inhomogeneities in concentration may lead to significant increase in concentration-dependent reaction rates and can result in a local enhancement in the production of minor species.

Mishra, Sudib [University of Arizona; Deymier, Pierre [University of Arizona; Muralidharan, Krishna [University of Arizona; Frantziskonis, G. [University of Arizona; Pannala, Sreekanth [ORNL; Simunovic, Srdjan [ORNL

2010-01-01T23:59:59.000Z

303

Second-order discretization in space and time for radiation hydrodynamics  

SciTech Connect (OSTI)

We present a method for solving the equations of radiation hydrodynamics that is second-order accurate in space and time. This method combines the MUSCL-Hancock method for solving the Euler equations with the TR/BDF2 scheme in time for solving the equations of radiative transfer. We use an LDFEM to discretize the radiative transfer equations in space, which, though uncommon for radiation diffusion calculations, is a standard for radiation transport applications. We address the challenges inherent to using different spatial discretizations for the hydrodynamics and radiation and demonstrate how these may be overcome. We define our method for a 1-D model of compressible fluid dynamics coupled with grey radiation diffusion. Using the method of manufactured solutions, we show that the method is second-order accurate in space and time for both the equilibrium diffusion and streaming limit. (authors)

Edwards, J. D.; Morel, J. E. [Department of Nuclear Engineering, TAMU 3133, Texas A and M University, College Station, TX 77843 (United States); Lowrie, R. B. [Computational Physics Group CCS-2, M.S. D413, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

2013-07-01T23:59:59.000Z

304

Dilepton production from the quark-gluon plasma using (3+1)-dimensional anisotropic dissipative hydrodynamics  

E-Print Network [OSTI]

We compute dilepton production from the deconfined phase of the quark-gluon plasma using leading-order (3+1)-dimensional anisotropic hydrodynamics. The anisotropic hydrodynamics equa- tions employed describe the full spatiotemporal evolution of the transverse temperature, spheroidal momentum-space anisotropy parameter, and the associated three-dimensional collective flow of the matter. The momentum-space anisotropy is also taken into account in the computation of the dilepton production rate, allowing for a self-consistent description of dilepton production from the quark-gluon plasma. For our final results, we present predictions for high-energy dilepton yields as a function of invariant mass, transverse momentum, and pair rapidity. We demonstrate that high- energy dilepton production is extremely sensitive to the assumed level of initial momentum-space anisotropy of the quark-gluon plasma. As a result, it may be possible to experimentally constrain the early-time momentum-space anisotropy of the quark-gluon...

Ryblewski, Radoslaw

2015-01-01T23:59:59.000Z

305

Energy flow between two hydrodynamically coupled particles kept at different effective temperatures  

E-Print Network [OSTI]

We measure the energy exchanged between two hydrodynamically coupled micron-sized Brownian particles trapped in water by two optical tweezers. The system is driven out of equilibrium by random forcing the position of one of the two particles. The forced particle behaves as it has an "effective temperature" higher than that of the other bead. This driving modifies the equilibrium variances and cross-correlation functions of the bead positions: we measure an energy flow between the particles and an instantaneous cross-correlation, proportional to the effective temperature difference between the two particles. A model of the interaction which is based on classical hydrodynamic coupling tensors is proposed. The theoretical and experimental results are in excellent agreement.

Antoine Brut; Artyom Petrosyan; Sergio Ciliberto

2015-02-06T23:59:59.000Z

306

Hydrodynamic flow in the vicinity of a nanopore induced by an applied voltage  

E-Print Network [OSTI]

Continuum simulation is employed to study ion transport and fluid flow through a nanopore in a solid-state membrane under an applied potential drop. Results show the existence of concentration polarization layers on the surfaces of the membrane. The nonuniformity of the ionic distribution gives rise to an electric pressure that drives vortical motion in the fluid. There is also a net hydrodynamic flow through the nanopore due to an asymmetry induced by the membrane surface charge. The qualitative behavior is similar to that observed in a previous study using molecular dynamic simulations. The current--voltage characteristics show some nonlinear features but are not greatly affected by the hydrodynamic flow in the parameter regime studied. In the limit of thin Debye layers, the electric resistance of the system can be characterized using an equivalent circuit with lumped parameters. Generation of vorticity can be understood qualitatively from elementary considerations of the Maxwell stresses. However, the flow...

Mao, Mao; Hu, Guohui

2013-01-01T23:59:59.000Z

307

Hydrodynamic provinces and oceanic connectivity from a transport network help designing marine reserves  

E-Print Network [OSTI]

Oceanic dispersal and connectivity have been identified as crucial factors for structuring marine populations and designing Marine Protected Areas (MPAs). Focusing on larval dispersal by ocean currents, we propose an approach coupling Lagrangian transport and new tools from Network Theory to characterize marine connectivity in the Mediterranean basin. Larvae of different pelagic durations and seasons are modeled as passive tracers advected in a simulated oceanic surface flow from which a network of connected areas is constructed. Hydrodynamical provinces extracted from this network are delimited by frontiers which match multi-scale oceanographic features. By examining the repeated occurrence of such boundaries, we identify the spatial scales and geographic structures that would control larval dispersal across the entire seascape. Based on these hydrodynamical units, we study novel connectivity metrics for existing reserves. Our results are discussed in the context of ocean biogeography and MPAs design, having...

Rossi, Vincent; Lpez, Cristbal; Hernndez-Garca, Emilio

2014-01-01T23:59:59.000Z

308

Liquid contact resonance atomic force microscopy via experimental reconstruction of the hydrodynamic function  

SciTech Connect (OSTI)

We present a method to correct for surface-coupled inertial and viscous fluid loading forces in contact resonance (CR) atomic force microscopy (AFM) experiments performed in liquid. Based on analytical hydrodynamic theory, the method relies on experimental measurements of the AFM cantilever's free resonance peaks near the sample surface. The free resonance frequencies and quality factors in both air and liquid allow reconstruction of a continuous hydrodynamic function that can be used to adjust the CR data in liquid. Validation experiments utilizing thermally excited free and in-contact spectra were performed to assess the accuracy of our approach. Results show that the method recovers the air frequency values within approximately 6%. Knowledge of fluid loading forces allows current CR analysis techniques formulated for use in air and vacuum environments to be applied to liquid environments. Our technique greatly extends the range of measurement environments available to CR-AFM.

Tung, Ryan C., E-mail: ryan.tung@nist.gov; Killgore, Jason P.; Hurley, Donna C. [National Institute of Standards and Technology, Boulder, Colorado 80305 (United States)

2014-06-14T23:59:59.000Z

309

Energy flow between two hydrodynamically coupled particles kept at different effective temperatures  

E-Print Network [OSTI]

We measure the energy exchanged between two hydrodynamically coupled micron-sized Brownian particles trapped in water by two optical tweezers. The system is driven out of equilibrium by random forcing the position of one of the two particles. The forced particle behaves as it has an "effective temperature" higher than that of the other bead. This driving modifies the equilibrium variances and cross-correlation functions of the bead positions: we measure an energy flow between the particles and an instantaneous cross-correlation, proportional to the effective temperature difference between the two particles. A model of the interaction which is based on classical hydrodynamic coupling tensors is proposed. The theoretical and experimental results are in excellent agreement.

Antoine Brut; Artyom Petrosyan; Sergio Ciliberto

2014-08-22T23:59:59.000Z

310

Laboratory Experiments and Hydrodynamic Modeling of a Bed Leveler Used to Level the Bottom of Ship Channels after Dredging  

E-Print Network [OSTI]

This study was conducted to ascertain the impacts of bed leveling, following ship channel dredging operations, and to also investigate the hydrodynamic flow field around box bed levelers. Laboratory experiments were conducted with bed levelers...

Paul, Ephraim Udo

2011-02-22T23:59:59.000Z

311

Effects of upland disturbance and instream restoration on hydrodynamics and ammonium uptake in headwater streams  

SciTech Connect (OSTI)

Delivery of water, sediments, nutrients, and organic matter to stream ecosystems is strongly influenced by the catchment of the stream and can be altered greatly by upland soil and vegetation disturbance. At the Fort Benning Military Installation (near Columbus, Georgia), spatial variability in intensity of military training results in a wide range of intensities of upland disturbance in stream catchments. A set of 8 streams in catchments spanning this upland disturbance gradient was selected for investigation of the impact of disturbance intensity on hydrodynamics and nutrient uptake. The size of transient storage zones and rates of NH4+ uptake in all study streams were among the lowest reported in the literature. Upland disturbance did not appear to influence stream hydrodynamics strongly, but it caused significant decreases in instream nutrient uptake. In October 2003, coarse woody debris (CWD) was added to of the study streams (spanning the disturbance gradient) in an attempt to increase hydrodynamic and structural complexity with the goals of enhancing biotic habitat and increasing nutrient uptake rates. CWD additions had positive short-term (within 1 mo) effects on hydrodynamic complexity (water velocity decreased and transient storage zone cross-sectional area, relative size of the transient storage zone, fraction of the median travel time attributable to transient storage over a standardized length of 200 m, and the hydraulic retention factor increased) and nutrient uptake (NH4+ uptake rates increased). Our results suggest that water quality in streams with intense upland disturbances can be improved by enhancing instream biotic nutrient uptake capacity through measures such as restoring stream CWD.

Roberts, Brian J [ORNL; Mulholland, Patrick J [ORNL; Houser, Jeffrey N [ORNL

2007-01-01T23:59:59.000Z

312

Effects of Hydrodynamic Modelling in Fully Coupled Simulations of a Semi-submersible Wind Turbine  

Science Journals Connector (OSTI)

This work examines the dynamic response of a single semi-submersible wind turbine (SSWT) based on different hydrodynamic theories. Comparisons of platform motions and structural responses in the wind turbine are shown for simulations for a model with linear potential ?ow solution and quadratic drag and simulations with only Morison-type forces. The SSWT modelled in this study is based on WindFloat and carries the NREL 5MW wind turbine and should be considered a large volume structure. This implies that diffraction effects should be considered by using potential ?ow theory and viscous effects by Morison's equation.A new coupled simulation code was developed by linking the SIMO and RIFLEX hydrodynamic, structural, and control system computational tools, from MARINTEK, with the aerodynamic forces and wind ?eld generation capabilities of AeroDyn and TurbSim, from NREL. In contrast to other available simulation codes, this combination enabled the implementation of these two different hydrodynamic theories and offered the possibility of ?nite element mooring line models. Wave-only simulations were considered ?rst, in order to tune and compare potential theory versus the inertia term in Morison's equation. Some limited coupled wave-wind simulations give an indication of the extent to which hydrodynamic modelling affects the global response.The SSWT case study showed that the Morison model with forces integrated up to wave elevation gave a good representation of the motions compared to the potential ?ow model with quadratic drag forces. It also showed that motions are sensitive to choice of added mass coefficients, stretching and dynamic pressure under the columns. Combined wind and wave simulations, using a non-optimized control approach, showed that pitch motions in?uence the power production and blade bending moments.

Marit I. Kvittem; Erin E. Bachynski; Torgeir Moan

2012-01-01T23:59:59.000Z

313

3D Relativistic Hydrodynamic Computations Using Lattice-QCD-Inspired Equations of State  

E-Print Network [OSTI]

In this communication, we report results of three-dimensional hydrodynamic computations, by using equations of state with a critical end point as suggested by the lattice QCD. Some of the results are an increase of the multiplicity in the mid-rapidity region and a larger elliptic-flow parameter v2. We discuss also the effcts of the initial-condition fluctuations and the continuous emission.

Yogiro Hama; Rone P. G. Andrade; Frederique Grassi; Otavio Socolowski Jr; Takeshi Kodama; Bernardo Tavares; S. S. Padula

2005-10-07T23:59:59.000Z

314

Depositional environment and hydrodynamic flow in Lower Cretaceous J Sandstone, Lonetree field, Denver basin, Colorado  

E-Print Network [OSTI]

aquifer, as modified from Hoeger (1968) and Pruit (1978). 19 Diagram illustrating the trapping of oil by both capillary and hydrodynamic elements. 25 Extrapolation of the initial shutin period of the Amoco 56 C-1 UPRR, T4S-R59W, illustrating the rela... buildup curve for the initial shutin (ISI) period of the Miami Oil 1 Lea sure well showing the extrapolated original pressure (Po). . . . . . . . . . . . . . . . Pressure buildup curve for the initial shutin (ISI) period of the Huckabay 1 Amoco Maddern...

Bicknell, James Scott

1985-01-01T23:59:59.000Z

315

Effects of equation of state on hydrodynamic expansion, spectra and flow harmonics  

E-Print Network [OSTI]

We perform a systematic study of the role played by the equation of state in the hydrodynamic evolution of the matter produced in relativistic heavy ion collisions. By using the same initial conditions and freeze-out scenario, the effects of different equations of state are compared by calculating their respective hydrodynamical evolution, particle spectra and elliptic flow parameter $v_2$. Three different types of equation of state are studied, each focusing on different features, such as the nature of the phase transition, as well as strangeness and baryon densities. Different equations of state imply different hydrodynamic responses, the impact thereof on final state anisotropies are investigated. The results of our calculations are compared to the data of two RHIC energies, 130 GeV and 200 GeV. It is found that the three equations of state used in the calculations describe the data reasonably well; differences can be observed, but they are quite small. The insensitivity to the equation of state weakens th...

Dudek, Danuce M; Wu, Chen; Socolowski, Otavio; Padula, Sandra S; Krein, Gastao; Hama, Yogiro; Kodama, Takeshi

2014-01-01T23:59:59.000Z

316

Three-dimensional CFD simulation of hydrodynamics in an interconnected fluidized bed for chemical looping combustion  

Science Journals Connector (OSTI)

Abstract A hydrodynamic model of an interconnected fluidized bed for chemical looping combustion was established based on the EulerianEulerian two-fluid model with the kinetic theory of granular flow. The effect of the drag model on the computational results was investigated and detailed hydrodynamics were predicted in the three-dimensional circulating fluidized bed (composed of a riser, bubbling bed, pot-seal and cyclone). Both qualitative and quantitative results indicated that the drag model had a significant effect on the flow behavior. The Gidaspow and the Syamlal & O'Brien drag models both produced accurate predictions in this study. The pressure balance of an interconnected fluidized bed revealed that the pressure in the bubbling bed was lower than that in the pot-seal and the riser, whilst still being higher than the pressure in the cyclone. The riser and bubbling bed were individually operated in fast and bubbling fluidization regions. The three distinct regions identified from the bottom to the top of the riser were: entrance region, bulk region and exit region. The solids volume fraction was higher in the near-wall region but lower in the center region for both the riser and bubbling bed. The coupled characteristics of the fluidized bed were predominantly identified by the strong effect of operational gas velocity in the riser on the hydrodynamics in the bubbling bed.

Yanjun Guan; Jian Chang; Kai Zhang; Baodong Wang; Qi Sun

2014-01-01T23:59:59.000Z

317

Gaussian approximation for finitely extensible bead-spring chains with hydrodynamic interaction  

E-Print Network [OSTI]

The Gaussian Approximation, proposed originally by Ottinger [J. Chem. Phys., 90 (1) : 463-473, 1989] to account for the influence of fluctuations in hydrodynamic interactions in Rouse chains, is adapted here to derive a new mean-field approximation for the FENE spring force. This "FENE-PG" force law approximately accounts for spring-force fluctuations, which are neglected in the widely used FENE-P approximation. The Gaussian Approximation for hydrodynamic interactions is combined with the FENE-P and FENE-PG spring force approximations to obtain approximate models for finitely-extensible bead-spring chains with hydrodynamic interactions. The closed set of ODE's governing the evolution of the second-moments of the configurational probability distribution in the approximate models are used to generate predictions of rheological properties in steady and unsteady shear and uniaxial extensional flows, which are found to be in good agreement with the exact results obtained with Brownian dynamics simulations. In particular, predictions of coil-stretch hysteresis are in quantitative agreement with simulations' results. Additional simplifying diagonalization-of-normal-modes assumptions are found to lead to considerable savings in computation time, without significant loss in accuracy.

R. Prabhakar; J. Ravi Prakash

2006-02-07T23:59:59.000Z

318

Puget Sound Dissolved Oxygen Modeling Study: Development of an Intermediate-Scale Hydrodynamic Model  

SciTech Connect (OSTI)

The Washington State Department of Ecology contracted with Pacific Northwest National Laboratory to develop an intermediate-scale hydrodynamic and water quality model to study dissolved oxygen and nutrient dynamics in Puget Sound and to help define potential Puget Sound-wide nutrient management strategies and decisions. Specifically, the project is expected to help determine 1) if current and potential future nitrogen loadings from point and non-point sources are significantly impairing water quality at a large scale and 2) what level of nutrient reductions are necessary to reduce or dominate human impacts to dissolved oxygen levels in the sensitive areas. In this study, an intermediate-scale hydrodynamic model of Puget Sound was developed to simulate the hydrodynamics of Puget Sound and the Northwest Straits for the year 2006. The model was constructed using the unstructured Finite Volume Coastal Ocean Model. The overall model grid resolution within Puget Sound in its present configuration is about 880 m. The model was driven by tides, river inflows, and meteorological forcing (wind and net heat flux) and simulated tidal circulations, temperature, and salinity distributions in Puget Sound. The model was validated against observed data of water surface elevation, velocity, temperature, and salinity at various stations within the study domain. Model validation indicated that the model simulates tidal elevations and currents in Puget Sound well and reproduces the general patterns of the temperature and salinity distributions.

Yang, Zhaoqing; Khangaonkar, Tarang; Labiosa, Rochelle G.; Kim, Taeyun

2010-11-30T23:59:59.000Z

319

Initialization of hydrodynamics in relativistic heavy ion collisions with an energy-momentum transport model  

E-Print Network [OSTI]

A key ingredient of hydrodynamical modeling of relativistic heavy ion collisions is thermal initial conditions, an input that is the consequence of a pre-thermal dynamics which is not completely understood yet. In the paper we employ a recently developed energy-momentum transport model of the pre-thermal stage to study influence of the alternative initial states in nucleus-nucleus collisions on flow and energy density distributions of the matter at the starting time of hydrodynamics. In particular, the dependence of the results on isotropic and anisotropic initial states is analyzed. It is found that at the thermalization time the transverse flow is larger and the maximal energy density is higher for the longitudinally squeezed initial momentum distributions. The results are also sensitive to the relaxation time parameter, equation of state at the thermalization time, and transverse profile of initial energy density distribution: Gaussian approximation, Glauber Monte Carlo profiles, etc. Also, test results ensure that the numerical code based on the energy-momentum transport model is capable of providing both averaged and fluctuating initial conditions for the hydrodynamic simulations of relativistic nuclear collisions.

V. Yu. Naboka; S. V. Akkelin; Iu. A. Karpenko; Yu. M. Sinyukov

2015-01-14T23:59:59.000Z

320

Hydrodynamic flow in the vicinity of a nanopore induced by an applied voltage  

Science Journals Connector (OSTI)

Continuum simulation is employed to study ion transport and fluid flow through a nanopore in a solid-state membrane under an applied potential drop. The results show the existence of concentration polarization layers on the surfaces of the membrane. The nonuniformity of the ionic distribution gives rise to an electric pressure that drives vortical motion in the fluid. There is also a net hydrodynamic flow through the nanopore due to an asymmetry induced by the membrane surface charge. The qualitative behavior is similar to that observed in a previous study using molecular dynamic simulations. The currentvoltage characteristics show some nonlinear features but are not greatly affected by the hydrodynamic flow in the parameter regime studied. In the limit of thin Debye layers, the electric resistance of the system can be characterized using an equivalent circuit with lumped parameters. Generation of vorticity can be understood qualitatively from elementary considerations of the Maxwell stresses. However, the flow strength is a strongly nonlinear function of the applied field. Combination of electrophoretic and hydrodynamic effects can lead to ion selectivity in terms of valences and this could have some practical applications in separations.

Mao Mao; Sandip Ghosal; Guohui Hu

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Hydrodynamic flow in the vicinity of a nanopore induced by an applied voltage  

E-Print Network [OSTI]

Continuum simulation is employed to study ion transport and fluid flow through a nanopore in a solid-state membrane under an applied potential drop. Results show the existence of concentration polarization layers on the surfaces of the membrane. The nonuniformity of the ionic distribution gives rise to an electric pressure that drives vortical motion in the fluid. There is also a net hydrodynamic flow through the nanopore due to an asymmetry induced by the membrane surface charge. The qualitative behavior is similar to that observed in a previous study using molecular dynamic simulations. The current--voltage characteristics show some nonlinear features but are not greatly affected by the hydrodynamic flow in the parameter regime studied. In the limit of thin Debye layers, the electric resistance of the system can be characterized using an equivalent circuit with lumped parameters. Generation of vorticity can be understood qualitatively from elementary considerations of the Maxwell stresses. However, the flow strength is a strongly nonlinear function of the applied field. Combination of electrophoretic and hydrodynamic effects can lead to ion selectivity in terms of valences and this could have some practical applications in separations.

Mao Mao; Sandip Ghosal; Guohui Hu

2013-05-16T23:59:59.000Z

322

High-energy Particle Transport in Three-dimensional Hydrodynamic Models of Colliding-wind Binaries  

Science Journals Connector (OSTI)

Massive stars in binary systems (such as WR 140, WR 147, or ? Carinae) have long been regarded as potential sources of high-energy ?-rays. The emission is thought to arise in the region where the stellar winds collide and produce relativistic particles that subsequently might be able to emit ?-rays. Detailed numerical hydrodynamic simulations have already offered insight into the complex dynamics of the wind collision region (WCR), while independent analytical studies, albeit with simplified descriptions of the WCR, have shed light on the spectra of charged particles. In this paper, we describe a combination of these two approaches. We present a three-dimensional hydrodynamical model for colliding stellar winds and compute spectral energy distributions of relativistic particles for the resulting structure of the WCR. The hydrodynamic part of our model incorporates the line-driven acceleration of the winds, gravity, orbital motion, and the radiative cooling of the shocked plasma. In our treatment of charged particles, we consider diffusive shock acceleration in the WCR and the subsequent cooling via inverse Compton losses (including Klein-Nishina effects), bremsstrahlung, collisions, and other energy loss mechanisms.

K. Reitberger; R. Kissmann; A. Reimer; O. Reimer; G. Dubus

2014-01-01T23:59:59.000Z

323

Hydrodynamic motion of a large prestressed concrete bucket foundation for offshore wind turbines  

Science Journals Connector (OSTI)

A large prestressed concrete bucket foundation (LPCBF) was used for the first offshore wind turbine in the Qidong sea area of Jiangsu Province in China. The most critical technique of the foundation is the self-floating towing technique based on a reasonable subdivision inside the bucket. To predict the dynamic behaviors of the LPCBF in waves supported by the air cushion the hydrodynamic software MOSES is used to simulate the three-dimensional motion of the foundation in the towing construction site. The prototype foundation models are established using MOSES with a water draft of 4?m 5?m and 6?m in given environmental conditions. The results show that the hydrodynamic responses of the large floater with air cushions depend not only on the wave conditions but also on the mass of the water column air cushion height and air pressure distribution. In addition the hydrodynamic characteristics can be tuned resulting in small dynamic responses in a particular sea state by changing the draft and water plug height. The floating technique of the LPCBF with supported air cushions in waves is highly competitive for saving cost while using few expensive types of equipment during the towing transportation.

Puyang Zhang; Hongyan Ding; Conghuan Le

2013-01-01T23:59:59.000Z

324

Proceedings of RIKEN BNL Research Center Workshop entitled Hydrodynamics in Heavy Ion Collisions and QCD Equation of State (Volume 88)  

SciTech Connect (OSTI)

The interpretation of relativistic heavy-ion collisions at RHIC energies with thermal concepts is largely based on the relative success of ideal (nondissipative) hydrodynamics. This approach can describe basic observables at RHIC, such as particle spectra and momentum anisotropies, fairly well. On the other hand, recent theoretical efforts indicate that dissipation can play a significant role. Ideally viscous hydrodynamic simulations would extract, if not only the equation of state, but also transport coefficients from RHIC data. There has been a lot of progress with solving relativistic viscous hydrodynamics. There are already large uncertainties in ideal hydrodynamics calculations, e.g., uncertainties associated with initial conditions, freezeout, and the simplified equations of state typically utilized. One of the most sensitive observables to the equation of state is the baryon momentum anisotropy, which is also affected by freezeout assumptions. Up-to-date results from lattice quantum chromodynamics on the transition temperature and equation of state with realistic quark masses are currently available. However, these have not yet been incorporated into the hydrodynamic calculations. Therefore, the RBRC workshop 'Hydrodynamics in Heavy Ion Collisions and QCD Equation of State' aimed at getting a better understanding of the theoretical frameworks for dissipation and near-equilibrium dynamics in heavy-ion collisions. The topics discussed during the workshop included techniques to solve the dynamical equations and examine the role of initial conditions and decoupling, as well as the role of the equation of state and transport coefficients in current simulations.

Karsch,F.; Kharzeev, D.; Molnar, K.; Petreczky, P.; Teaney, D.

2008-04-21T23:59:59.000Z

325

Effects of open boundary location on the far-field hydrodynamics of a Severn Barrage  

Science Journals Connector (OSTI)

Abstract The Severn Estuary has the second largest tide range in the world and a barrage across the estuary from Cardiff in South Wales to Weston in South West England has been proposed for over half a century, to extract large amounts of tidal energy from the estuary. To assess the environmental impacts of the proposed tidal barrage requires accurate model predictions of both the near-field and far-field hydrodynamics, which can strongly depend on the model area and the appropriate boundary forcing. In this paper two models, based on the Environmental Fluid Dynamics Code (EFDC) numerical model with a recently-developed Barrage module (EFDC_B), were set up with different computational domains. The Continental Shelf model, which was centred on the Bristol Channel, has its open boundary extended to beyond the Continental Shelf. The Irish Sea model, which was also centred around the Bristol Channel, only has its open boundary extended to the Celtic Sea in the south and the Irish Sea in the north. In order to investigate the effects of the open boundary conditions imposed in the models on the near and far-field hydrodynamics for the case of the Severn Barrage, the Continental Shelf model was first run with and without the operation of the Severn Barrage. The Irish Sea model was then run, also with and without the operation of the Severn Barrage, and with the open boundary conditions provided by the Continental Shelf model. The results from both models were then analysed to study the impact of the tidal barrage on the near-field and far-field hydrodynamics in the Bristol Channel and Irish Sea. Detailed comparisons of the model results indicate that the hydrodynamic conditions along the open boundaries of the Irish Sea model are affected by the tidal barrage and that the open boundary conditions also have noticeable impacts on the far-field hydrodynamics, especially in the Irish Sea, with approximately an average 47cm difference in the maximum water levels predicted in Cardigan Bay and with a maximum difference of 9cm in the northern part of Cardigan Bay.

Juntao Zhou; Shunqi Pan; Roger A. Falconer

2014-01-01T23:59:59.000Z

326

Impact of different tidal renewable energy projects on the hydrodynamic processes in the Severn Estuary, UK  

Science Journals Connector (OSTI)

The Severn Estuary, located in the UK between south east Wales and south west England, is an ideal site for tidal renewable energy projects, since this estuary has the third highest tidal range in the world, with a spring tidal range approaching 14m. The UK Government recently invited proposals for tidal renewable energy projects from the estuary and many proposals were submitted for consideration. Among the proposals submitted and subsequently shortlisted were: the CardiffWeston Barrage, the Fleming Lagoon and the Shoots Barrage, all three of which are nationally public interest. Therefore a two-dimensional finite volume numerical model, based on an unstructured triangular mesh, has been refined to study the hydrodynamic impact and flood inundation extent, post construction, of all three of these proposed tidal power projects. The model-predicted hydrodynamic processes have been analysed in detail, both without and with the structures, including the discharge processes at key sections, the contours of maximum and minimum water levels, the envelope curves of high and low water levels, the maximum tidal currents, the local velocity fields around the structures and the mean power output curves. Simulated results indicate that: (i) although the construction of the CardiffWeston Barrage would have an adverse impact on a range of environmental aspects, due to there being approximately a 50% decrease in the peak discharge entering the upstream region, it would reduce the maximum water levels upstream of the barrage by typically 0.31.2m, which could be positive in respect of coastal flooding; (ii) the construction of the Fleming Lagoon would have little influence on the hydrodynamic processes in the Severn Estuary; and (iii) the construction of the Shoots Barrage would decrease the maximum water levels upstream of the M4 bridge by between 0.3 and 1.0m, but it could lead to an increase in the maximum water levels downstream of the barrage by typically 2030cm.

Junqiang Xia; Roger A. Falconer; Binliang Lin

2010-01-01T23:59:59.000Z

327

Hydrodynamic flow in lower Cretaceous Muddy sandstone, Gas Draw Field, Powder River Basin, Wyoming  

E-Print Network [OSTI]

/dx =[pj(p?- p )j (dh/dx), (4) where 8 is the angle of inclination, dz/dx is the slope of the oil- water interface, dh/dx is the horizontal component of head change, and pj(p - p ) is an amplification factor (Willis, 1961). Thus the w 0 hydrodynamic oil... reflected by Muddy thickness greater than 100 ft appears to cross the north end of Gas Draw, but 37 CHEVRON 1 FEDERAL PERMEABILITY (md) FEET 1000 100 10 I 0. 1 20 POROSITY &Im 20 10 0 WATER SATURATION 100 80 80 40 20 0 I I I I I I OIL SATURATION...

Lin, Joseph Tien-Chin

2012-06-07T23:59:59.000Z

328

Variables Affecting Smooth Particle Hydrodynamics Simulation of High-Velocity Flyer Plate Impact Experiments  

SciTech Connect (OSTI)

This paper describes our work to characterize the variables affecting the smoothed particle hydrodynamics (SPH) method in the LS-DYNA package for simulating high-velocity flyer plate impact experiments. LS-DYNA simulations are compared with one-dimensional experimental data of an oxygen-free high-conductivity (OFHC) copper flyer plate impacting another plate of the same material. The comparison is made by measuring the velocity of a point on the back surface of the impact plate using the velocity interferometer system for any reflector (VISAR) technique.

Somasundaram, Deepak S [UNLV; Trabia, Mohamed [UNLV; O'Toole, Brendan [UNLV; Hixson, Robert S [NSTec

2014-01-23T23:59:59.000Z

329

Hydrodynamic impact of a tidal barrage in the Severn Estuary, UK  

Science Journals Connector (OSTI)

The Severn Estuary has a spring tidal range approaching 14m, which is among the highest tides in the world. Various proposals have been made regarding the construction of a tidal barrage across the estuary to enable tidal energy to be generated. The aim of the current study is to investigate the impact of constructing a tidal barrage on the hydrodynamic processes in the Severn Estuary using a numerical model. A two-dimensional hydrodynamic model based on an unstructured triangular mesh has been used in this study. The model employs a TVD finite volume method to solve the 2D shallow water equations, with the numerical scheme being second-order accurate in both time and space. The model has been calibrated by comparing model predictions with observed tidal levels and currents at different sites, for typical spring and neap tides, and it has also been verified using tidal level time series at four tide gauging stations measured in 2003. In order to predict the hydrodynamic processes with a barrage, the model domain was divided into two subdomains: one each side of the barrage. Details were given of the method used for representing the various hydraulic structures, including the sluices and turbines, along the proposed Cardiff-Weston barrage. The impact of constructing the barrage on the water levels and velocities was then investigated using this model. Model-predicted hydrodynamic parameters, without and with the barrage, were analysed in detail. Model predictions indicated that with the barrage the mean power output could reach 2.0GW with up to 25GWh units of electricity being generated over a typical mean spring tidal cycle. At some cross-sections, the maximum discharges were predicted to decrease by 3050%, as compared with the corresponding discharges predicted without the barrage. The model also predicted that with the barrage, the maximum water levels upstream of the barrage would decrease by 0.51.5m, and with the peak tidal currents also being reduced considerably. For different operating modes, complex velocity fields were predicted to occur in the vicinity of the barrage.

Junqiang Xia; Roger A. Falconer; Binliang Lin

2010-01-01T23:59:59.000Z

330

Knudsen-to-Hydrodynamic Crossover in Liquid He3 in a High-Porosity Aerogel  

Science Journals Connector (OSTI)

We present a combined experimental and theoretical study of the drag force acting on a high porosity aerogel immersed in liquid He3 and its effect on sound propagation. The drag force is characterized by the Knudsen number, which is defined as the ratio of the quasiparticle mean free path to the radius of an aerogel strand. Evidence of the Knudsen-hydrodynamic crossover is clearly demonstrated by a drastic change in the temperature dependence of ultrasound attenuation in 98% porosity aerogel. Our theoretical analysis shows that the frictional sound damping caused by the drag force is governed by distinct laws in the two regimes, providing excellent agreement with the experimental observation.

H. Takeuchi; S. Higashitani; K. Nagai; H. C. Choi; B. H. Moon; N. Masuhara; M. W. Meisel; Y. Lee; N. Mulders

2012-06-01T23:59:59.000Z

331

Macrostatistical hydrodynamics  

SciTech Connect (OSTI)

During the course of these efforts we have been studying suspension of particles in Newtonian and non-Newtonian liquids, embodying a combination of analysis, experiments, and numerical simulations. Experiments primarily involved tracking small balls as they fall slowly through otherwise quiescent suspensions of neutrally buoyant particles. Detailed trajectories of the balls, obtained either with new experimental techniques or by numerical simulation, were statistically interpreted in terms of the mean settling velocity and the dispersion about the mean. We showed that falling-ball rheometry, using small balls relative to the suspended particles, could be a means of measuring the macroscopic zero-shear-rate viscosity without significantly disturbing the original microstructure; therefore, falling-ball rheometry can be a powerful tool for use in studying the effects of microstructures on the macroscopic properties of suspensions. We plan to extend this work to the study of more complex, structured fluids, and to use other tools (e.g., rolling-ball rheometry) to study boundary effects. We also propose to study flowing suspensions to obtain non-zero-shear-rate viscosities. The intent is to develop an understanding of the basic principles needed to treat generic multiphase flow problems, through a detailed study of model systems. 8 refs.

Brenner, H.

1992-01-01T23:59:59.000Z

332

Improving the hot-spot pressure and demonstrating ignition hydrodynamic equivalence in cryogenic deuteriumtritium implosions on OMEGA  

SciTech Connect (OSTI)

Reaching ignition in direct-drive (DD) inertial confinement fusion implosions requires achieving central pressures in excess of 100 Gbar. The OMEGA laser system [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] is used to study the physics of implosions that are hydrodynamically equivalent to the ignition designs on the National Ignition Facility (NIF) [J. A. Paisner et al., Laser Focus World 30, 75 (1994)]. It is shown that the highest hot-spot pressures (up to 40 Gbar) are achieved in target designs with a fuel adiabat of ? ? 4, an implosion velocity of 3.8??10{sup 7}?cm/s, and a laser intensity of ?10{sup 15}?W/cm{sup 2}. These moderate-adiabat implosions are well understood using two-dimensional hydrocode simulations. The performance of lower-adiabat implosions is significantly degraded relative to code predictions, a common feature between DD implosions on OMEGA and indirect-drive cryogenic implosions on the NIF. Simplified theoretical models are developed to gain physical understanding of the implosion dynamics that dictate the target performance. These models indicate that degradations in the shell density and integrity (caused by hydrodynamic instabilities during the target acceleration) coupled with hydrodynamics at stagnation are the main failure mechanisms in low-adiabat designs. To demonstrate ignition hydrodynamic equivalence in cryogenic implosions on OMEGA, the target-design robustness to hydrodynamic instability growth must be improved by reducing laser-coupling losses caused by cross beam energy transfer.

Goncharov, V. N.; Sangster, T. C.; Betti, R.; Boehly, T. R.; Bonino, M. J.; Collins, T. J. B.; Craxton, R. S.; Delettrez, J. A.; Edgell, D. H.; Epstein, R.; Follett, R. K.; Forrest, C. J.; Froula, D. H.; Glebov, V. Yu.; Harding, D. R.; Henchen, R. J.; Hu, S. X.; Igumenshchev, I. V.; Janezic, R.; Kelly, J. H. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); and others

2014-05-15T23:59:59.000Z

333

Relativistic viscous hydrodynamics for heavy-ion collisions with ECHO-QGP  

E-Print Network [OSTI]

We present ECHO-QGP, a numerical code for $(3+1)$-dimensional relativistic viscous hydrodynamics designed for the modeling of the space-time evolution of the matter created in high energy nuclear collisions. The code has been built on top of the \\emph{Eulerian Conservative High-Order} astrophysical code for general relativistic magneto-hydrodynamics [\\emph{Del Zanna et al., Astron. Astrophys. 473, 11, 2007}] and here it has been upgraded to handle the physics of the Quark-Gluon Plasma. ECHO-QGP features second-order treatment of causal relativistic viscosity effects in both Minkowskian or Bjorken coordinates; partial or complete chemical equilibrium of hadronic species before kinetic freeze-out; initial conditions based on the optical Glauber model, including a Monte-Carlo routine for event-by-event fluctuating initial conditions; a freeze-out procedure based on the Cooper-Frye prescription. The code is extensively validated against several test problems and results always appear accurate, as guaranteed by th...

Del Zanna, L; Inghirami, G; Rolando, V; Beraudo, A; De Pace, A; Pagliara, G; Drago, A; Becattini, F

2013-01-01T23:59:59.000Z

334

Development of a Hydrodynamic Model of Puget Sound and Northwest Straits  

SciTech Connect (OSTI)

The hydrodynamic model used in this study is the Finite Volume Coastal Ocean Model (FVCOM) developed by the University of Massachusetts at Dartmouth. The unstructured grid and finite volume framework, as well as the capability of wetting/drying simulation and baroclinic simulation, makes FVCOM a good fit to the modeling needs for nearshore restoration in Puget Sound. The model domain covers the entire Puget Sound, Strait of Juan de Fuca, San Juan Passages, and Georgia Strait at the United States-Canada Border. The model is driven by tide, freshwater discharge, and surface wind. Preliminary model validation was conducted for tides at various locations in the straits and Puget Sound using National Oceanic and Atmospheric Administration (NOAA) tide data. The hydrodynamic model was successfully linked to the NOAA oil spill model General NOAA Operational Modeling Environment model (GNOME) to predict particle trajectories at various locations in Puget Sound. Model results demonstrated that the Puget Sound GNOME model is a useful tool to obtain first-hand information for emergency response such as oil spill and fish migration pathways.

Yang, Zhaoqing; Khangaonkar, Tarang P.

2007-12-10T23:59:59.000Z

335

Hydrodynamic instability growth and mix experiments at the National Ignition Facility  

SciTech Connect (OSTI)

Hydrodynamic instability growth and its effects on implosion performance were studied at the National Ignition Facility [G. H. Miller, E. I. Moses, and C. R. Wuest, Opt. Eng. 443, 2841 (2004)]. Implosion performance and mix have been measured at peak compression using plastic shells filled with tritium gas and containing embedded localized carbon-deuterium diagnostic layers in various locations in the ablator. Neutron yield and ion temperature of the deuterium-tritium fusion reactions were used as a measure of shell-gas mix, while neutron yield of the tritium-tritium fusion reaction was used as a measure of implosion performance. The results have indicated that the low-mode hydrodynamic instabilities due to surface roughness were the primary culprits for yield degradation, with atomic ablator-gas mix playing a secondary role. In addition, spherical shells with pre-imposed 2D modulations were used to measure instability growth in the acceleration phase of the implosions. The capsules were imploded using ignition-relevant laser pulses, and ablation-front modulation growth was measured using x-ray radiography for a shell convergence ratio of ?2. The measured growth was in good agreement with that predicted, thus validating simulations for the fastest growing modulations with mode numbers up to 90 in the acceleration phase. Future experiments will be focused on measurements at higher convergence, higher-mode number modulations, and growth occurring during the deceleration phase.

Smalyuk, V. A.; Barrios, M.; Caggiano, J. A.; Casey, D. T.; Cerjan, C. J.; Clark, D. S.; Edwards, M. J.; Haan, S. W.; Hammel, B. A.; Hamza, A.; Hsing, W. W.; Hurricane, O.; Kroll, J.; Landen, O. L.; Lindl, J. D.; Ma, T.; McNaney, J. M.; Mintz, M.; Parham, T.; Peterson, J. L. [Lawrence Livermore National Laboratory, NIF Directorate, Livermore, California 94550 (United States)] [Lawrence Livermore National Laboratory, NIF Directorate, Livermore, California 94550 (United States); and others

2014-05-15T23:59:59.000Z

336

Relativistic viscous hydrodynamics for heavy-ion collisions with ECHO-QGP  

E-Print Network [OSTI]

We present ECHO-QGP, a numerical code for $(3+1)$-dimensional relativistic viscous hydrodynamics designed for the modeling of the space-time evolution of the matter created in high energy nuclear collisions. The code has been built on top of the \\emph{Eulerian Conservative High-Order} astrophysical code for general relativistic magneto-hydrodynamics [\\emph{Del Zanna et al., Astron. Astrophys. 473, 11, 2007}] and here it has been upgraded to handle the physics of the Quark-Gluon Plasma. ECHO-QGP features second-order treatment of causal relativistic viscosity effects in both Minkowskian or Bjorken coordinates; partial or complete chemical equilibrium of hadronic species before kinetic freeze-out; initial conditions based on the optical Glauber model, including a Monte-Carlo routine for event-by-event fluctuating initial conditions; a freeze-out procedure based on the Cooper-Frye prescription. The code is extensively validated against several test problems and results always appear accurate, as guaranteed by the combination of the conservative (shock-capturing) approach and the high-order methods employed. ECHO-QGP can be extended to include evolution of the electromagnetic fields coupled to the plasma.

L. Del Zanna; V. Chandra; G. Inghirami; V. Rolando; A. Beraudo; A. De Pace; G. Pagliara; A. Drago; F. Becattini

2013-05-30T23:59:59.000Z

337

The effects of early time laser drive on hydrodynamic instability growth in National Ignition Facility implosions  

SciTech Connect (OSTI)

Defects on inertial confinement fusion capsule surfaces can seed hydrodynamic instability growth and adversely affect capsule performance. The dynamics of shocks launched during the early period of x-ray driven National Ignition Facility (NIF) implosions determine whether perturbations will grow inward or outward at peak implosion velocity and final compression. In particular, the strength of the first shock, launched at the beginning of the laser pulse, plays an important role in determining Richtmyer-Meshkov (RM) oscillations on the ablation front. These surface oscillations can couple to the capsule interior through subsequent shocks before experiencing Rayleigh-Taylor (RT) growth. We compare radiation hydrodynamic simulations of NIF implosions to analytic theories of the ablative RM and RT instabilities to illustrate how early time laser strength can alter peak velocity growth. We develop a model that couples the RM and RT implosion phases and captures key features of full simulations. We also show how three key parameters can control the modal demarcation between outward and inward growth.

Peterson, J. L.; Clark, D. S.; Suter, L. J. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Masse, L. P. [CEA, DAM, DIF, 91297 Arpajon (France)

2014-09-15T23:59:59.000Z

338

General Relativistic Hydrodynamic Simulation of Accretion Flow from a Stellar Tidal Disruption  

E-Print Network [OSTI]

We study how the matter dispersed when a supermassive black hole tidally disrupts a star joins an accretion flow. Combining a relativistic hydrodynamic simulation of the stellar disruption with a relativistic hydrodynamics simulation of the tidal debris motion, we track such a system until ~80% of the stellar mass bound to the black hole has settled into an accretion flow. Shocks near the stellar pericenter and also near the apocenter of the most tightly-bound debris dissipate orbital energy, but only enough to make the characteristic radius comparable to the semi-major axis of the most-bound material, not the tidal radius as previously thought. The outer shocks are caused by post-Newtonian effects, both on the stellar orbit during its disruption and on the tidal forces. Accumulation of mass into the accretion flow is non-monotonic and slow, requiring ~3--10x the orbital period of the most tightly-bound tidal streams, while the inflow time for most of the mass may be comparable to or longer than the mass accu...

Shiokawa, Hotaka; Cheng, Roseanne M; Piran, Tsvi; Noble, Scott C

2015-01-01T23:59:59.000Z

339

$v_4$, $v_5$, $v_6$, $v_7$: nonlinear hydrodynamic response versus LHC data  

E-Print Network [OSTI]

Higher harmonics of anisotropic flow ($v_n$ with $n\\ge 4$) in heavy-ion collisions can be measured either with respect to their own plane, or with respect to a plane constructed using lower-order harmonics. We explain how such measurements are related to event-plane correlations. We show that CMS data on $v_4$ and $v_6$ are compatible with ATLAS data on event-plane correlations. If one assumes that higher harmonics are the superposition of non-linear and linear responses, then the linear and non-linear parts can be isolated under fairly general assumptions. By combining analyses of higher harmonics with analyses of $v_2$ and $v_3$, one can eliminate the uncertainty from initial conditions and define quantities that only involve nonlinear hydrodynamic response coefficients. Experimental data on $v_4$, $v_5$ and $v_6$ are in good agreement with hydrodynamic calculations. We argue that $v_7$ can be measured with respect to elliptic and triangular flow. We present predictions for $v_7$ versus centrality in Pb-Pb ...

Yan, Li

2015-01-01T23:59:59.000Z

340

Bridging ScrippS Science and induStry This was one of many issues that formed the basis for a study  

E-Print Network [OSTI]

tailored to the needs of water, electric, and natural gas industries. CalEnergy became viable when advances involving a consortium of industrial and academic partners including the California Energy Commission to help energy officials more efficiently plan for electricity demand, such as in hot summer months when

Constable, Steve

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341

Optimization of Computational Performance and Accuracy in 3?D Transient CFD Model for CFB Hydrodynamics Predictions  

Science Journals Connector (OSTI)

This work aims to present a pure 3?D CFD model accurate and efficient for the simulation of a pilot scale CFB hydrodynamics. The accuracy of the model was investigated as a function of the numerical parameters in order to derive an optimum model setup with respect to computational cost. The necessity of the in depth examination of hydrodynamics emerges by the trend to scale up CFBCs. This scale up brings forward numerous design problems and uncertainties which can be successfully elucidated by CFD techniques. Deriving guidelines for setting a computational efficient model is important as the scale of the CFBs grows fast while computational power is limited. However the optimum efficiency matter has not been investigated thoroughly in the literature as authors were more concerned for their models accuracy and validity. The objective of this work is to investigate the parameters that influence the efficiency and accuracy of CFB computational fluid dynamics models find the optimum set of these parameters and thus establish this technique as a competitive method for the simulation and design of industrial large scale beds where the computational cost is otherwise prohibitive. During the tests that were performed in this work the influence of turbulence modeling approach time and space density and discretization schemes were investigated on a 1.2 MWth CFB test rig. Using Fourier analysis dominant frequencies were extracted in order to estimate the adequate time period for the averaging of all instantaneous values. The compliance with the experimental measurements was very good. The basic differences between the predictions that arose from the various model setups were pointed out and analyzed. The results showed that a model with high order space discretization schemes when applied on a coarse grid and averaging of the instantaneous scalar values for a 20 sec period adequately described the transient hydrodynamic behaviour of a pilot CFB while the computational cost was kept low. Flow patterns inside the bed such as the core?annulus flow and the transportation of clusters were at least qualitatively captured.

I. Rampidis; A. Nikolopoulos; N. Koukouzas; P. Grammelis; E. Kakaras

2007-01-01T23:59:59.000Z

342

Modifications of Carbonate Fracture Hydrodynamic Properties by CO{sub 2}-Acidified Brine Flow  

SciTech Connect (OSTI)

Acidic reactive flow in fractures is relevant in subsurface activities such as CO{sub 2} geological storage and hydraulic fracturing. Understanding reaction-induced changes in fracture hydrodynamic properties is essential for predicting subsurface flows such as leakage, injectability, and fluid production. In this study, x-ray computed tomography scans of a fractured carbonate caprock were used to create three dimensional reconstructions of the fracture before and after reaction with CO{sub 2}-acidified brine (Ellis et al., 2011, Greenhouse Gases: Sci. Technol., 1:248-260). As expected, mechanical apertures were found to increase substantially, doubling and even tripling in some places. However, the surface geometry evolved in complex ways including comb-tooth structures created from preferential dissolution of calcite in transverse sedimentary bands, and the creation of degraded zones, i.e. porous calcite-depleted areas on reacted fracture surfaces. These geometric alterations resulted in increased fracture roughness, as measured by surface Z{sub 2} parameters and fractal dimensions D{sub f}. Computational fluid dynamics (CFD) simulations were conducted to quantify the changes in hydraulic aperture, fracture transmissivity and permeability. The results show that the effective hydraulic apertures are smaller than the mechanical apertures, and the changes in hydraulic apertures are nonlinear. Overestimation of flow rate by a factor of two or more would be introduced if fracture hydrodynamic properties were based on mechanical apertures, or if hydraulic aperture is assumed to change proportionally with mechanical aperture. The differences can be attributed, in part, to the increase in roughness after reaction, and is likely affected by contiguous transverse sedimentary features. Hydraulic apertures estimated by the 1D statistical model and 2D local cubic law (LCL) model are consistently larger than those calculated from the CFD simulations. In addition, a novel ternary segmentation method was devised to handle the degraded zones, allowing for a bounding analysis of the effects on hydraulic properties. We found that the degraded zones account for less than 15% of the fracture volume, but cover 70% to 80% of the fracture surface. When the degraded zones are treated as part of the fracture, the fracture transmissivities are two to four times larger because the fracture surfaces after reaction are not as rough as they would be if one considers the degraded zone as part of the rock. Therefore, while degraded zones created during geochemical reactions may not significantly increase mechanical aperture, this type of feature cannot be ignored and should be treated with prudence when predicting fracture hydrodynamic properties.

Deng, Hang; Ellis, Brian R.; Peters, Catherine A.; Fitts, Jeffrey P.; Crandall, Dustin; Bromhal, Grant S.

2013-08-01T23:59:59.000Z

343

Use of remote sensing data to enhance the performance of a hydrodynamic simulation of a partially frozen power plant  

E-Print Network [OSTI]

on the overall efficiency of a power plant. The ability to monitor a cooling pond using thermal remote sensing of a power plant cooling pond in the presence of ice and snow. Keywords: thermal infrared, hydrodynamic with the objective of improving our ability to understand and simulate the thermodynamics and dynamics of power plant

Salvaggio, Carl

344

Lattice Boltzmann open boundaries for hydrodynamic models A.F. Bennett a,*, J.R. Taylor b  

E-Print Network [OSTI]

Lattice Boltzmann open boundaries for hydrodynamic models A.F. Bennett a,*, J.R. Taylor b , B posed in every respect. Inserting lattice Boltzmann kinetics between hydrostatic boundary data-posedness; Lattice Boltzmann 1. Introduction It is ironic that the introduction of digital computing into fluid

Cambridge, University of

345

3D Lattice Boltzmann Magneto-hydrodynamics Sam Williams1,2, Jonathan Carter2, Leonid Oliker2,  

E-Print Network [OSTI]

1 3D Lattice Boltzmann Magneto-hydrodynamics (LBMHD3D) Sam Williams1,2, Jonathan Carter2, Leonid;5 Quick Introduction to Lattice Methods and LBMHD #12;6 Lattice Methods · Lattice Boltzmann models Lab samw@cs.berkeley.edu October 26, 2006 #12;2 · Previous Cell Work · Lattice Methods & LBMHD

346

Investigation of the hydrodynamics of flash floods in ephemeral channels: Scaling analysis and simulation using a shock-capturing  

E-Print Network [OSTI]

U N C O R R EC TED PR O O F Investigation of the hydrodynamics of flash floods in ephemeral channels: Scaling analysis and simulation using a shock-capturing flow model incorporating the effects; revised 29 August 2005; accepted 11 September 2005 Abstract Flow and infiltration during flash floods

347

THE JOURNAL OF EXPERIMENTAL ZOOLOGY 258164-173 (1991) Hydrodynamics of the Feet of Fish-Catching Bats  

E-Print Network [OSTI]

THE JOURNAL OF EXPERIMENTAL ZOOLOGY 258164-173 (1991) Hydrodynamics of the Feet of Fish-Catching Bats: Influence of the Water Surface on Drag and Morphological Design FRANK E. FISH, BRAD R. BLOOD and Pizonyx uiuesi, display similar hind foot mor- phologies specialized for their fish-catching habits

Fish, Frank

348

Hydrodynamics of Hemostasis in Sickle-Cell Disease S. I. A. Cohen1,* and L. Mahadevan1,2,  

E-Print Network [OSTI]

Hydrodynamics of Hemostasis in Sickle-Cell Disease S. I. A. Cohen1,* and L. Mahadevan1,2, 1 School flow in sickle-cell disease, is a complex dynamical process spanning multiple time and length scales. Motivated by recent ex vivo microfluidic measurements of hemostasis using blood from sickle-cell patients

Mahadevan, L.

349

MaGICC-WDM: the effects of warm dark matter in hydrodynamical simulations of disc galaxy formation  

Science Journals Connector (OSTI)

......the smoothed particle hydrodynamics code gasoline (Wadsley, Stadel Quinn 2004). It includes...those properties for the WDM1 case, in runs performed with different stellar feedback...orbits. While the satellite of g1536 falls straight into the centre of the host galaxy the......

Jakob Herpich; Gregory S. Stinson; Andrea V. Macci; Chris Brook; James Wadsley; Hugh M. P. Couchman; Tom Quinn

2014-01-01T23:59:59.000Z

350

Galactic scale gas flows in colliding galaxies: 3-Dimensional, N-body/hydrodynamics experiments  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Galactic Scale Gas Flows in Colliding Galaxies: Galactic Scale Gas Flows in Colliding Galaxies: a-Dimensional, N-bodyjHydrodynamics Experiments Susan A. Lamb* NORDITA and Neils Bohr Institute, Blegdamsvej 17, DK-2100, Kpbenhaven 0, Danmark. Richard A. Gerber University of Illinois at Urbana-Champaign, Departments of Physics and Astronomy, 1110 W. Green Street, Urbana, IL 61801, U.S.A. and Dinshaw S. Balsara t Johns Hopkins University, Department of Physics and Astronomy, Homewood Campu.s, Baltimore, MD 21218, U.S.A. Abstract. We present some result.s from three dimensional computer simulations of collisions between models of equal mass gaJaxies, one of which is a rotating, disk galaxy containing both gas and stars and the other is an elliptical contaiuing stars only. We use fully self consistent models in which the

351

Hydrodynamic Optimization Method and Design Code for Stall-Regulated Hydrokinetic Turbine Rotors  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5021 5021 August 2009 Hydrodynamic Optimization Method and Design Code for Stall-Regulated Hydrokinetic Turbine Rotors D. Sale University of Tennessee J. Jonkman and W. Musial National Renewable Energy Laboratory Presented at the ASME 28 th International Conference on Ocean, Offshore, and Arctic Engineering Honolulu, Hawaii May 31-June 5, 2009 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (ASE), a contractor of the US Government under Contract No. DE-AC36-08-GO28308. Accordingly, the US Government and ASE retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

352

Hydrodynamic Scaling Analysis of Nuclear Fusion driven by ultra-intense laser-plasma interactions  

E-Print Network [OSTI]

We discuss scaling laws of fusion yields generated by laser-plasma interactions. The yields are found to scale as a function of the laser power. The origin of the scaling law in the laser driven fusion yield is derived in terms of hydrodynamic scaling. We point out that the scaling properties can be attributed to the laser power dependence of three terms: the reaction rate, the density of the plasma and the projected range of the plasma particle in the target medium. The resulting scaling relations have a predictive power that enables estimating the fusion yield for a nuclear reaction which has not been investigated by means of the laser accelerated ion beams.

Sachie Kimura; Aldo Bonasera

2011-09-23T23:59:59.000Z

353

N=2 supersymmetric extension of a hydrodynamic system in Riemann invariants  

SciTech Connect (OSTI)

In this paper, we formulate an N=2 supersymmetric extension of a hydrodynamic-type system involving Riemann invariants. The supersymmetric version is constructed by means of a superspace and superfield formalism, using bosonic superfields, and consists of a system of partial differential equations involving both bosonic and fermionic variables. We make use of group-theoretical methods in order to analyze the extended model algebraically. Specifically, we calculate a Lie superalgebra of symmetries of our supersymmetric model and make use of a general classification method to classify the one-dimensional subalgebras into conjugacy classes. As a result we obtain a set of 401 one-dimensional nonequivalent subalgebras. For selected subalgebras, we use the symmetry reduction method applied to Grassmann-valued equations in order to determine analytic exact solutions of our supersymmetric model. These solutions include traveling waves, bumps, kinks, double-periodic solutions, and solutions involving exponentials and radicals.

Grundland, A. M. [Centre de Recherches Mathematiques, Universite de Montreal, C.P. 6128, Succ. Centre-ville, Montreal, Quebec H3C 3J7 (Canada); Universite du Quebec, Trois-Rivieres, C.P. 500, Quebec G9A 5H7 (Canada); Hariton, A. J. [Centre de Recherches Mathematiques, Universite de Montreal, C.P. 6128, Succ. Centre-ville, Montreal, Quebec H3C 3J7 (Canada)

2009-07-15T23:59:59.000Z

354

Hydrodynamic transport coefficients for the non-conformal quark-gluon plasma from holography  

E-Print Network [OSTI]

In this paper we obtain holographic formulas for the transport coefficients $\\kappa$ and $\\tau_\\pi$ present in the second-order derivative expansion of relativistic hydrodynamics in curved spacetime associated with a non-conformal strongly coupled plasma described holographically by an Einstein+Scalar action in the bulk. We compute these coefficients as functions of the temperature in a bottom-up non-conformal model that is tuned to reproduce lattice QCD thermodynamics at zero baryon chemical potential. We directly compute, besides the speed of sound, 6 other transport coefficients that appear at second-order in the derivative expansion. We also give an estimate for the temperature dependence of 11 other transport coefficients taking into account the simplest contribution from non-conformal effects that appear near the QCD crossover phase transition. Using these results, we construct an Israel-Stewart-like theory in flat spacetime containing 13 of these 17 transport coefficients that should be suitable for ph...

Finazzo, Stefano I; Marrochio, Hugo; Noronha, Jorge

2014-01-01T23:59:59.000Z

355

Development of a Hydrodynamic and Transport model of Bellingham Bay in Support of Nearshore Habitat Restoration  

SciTech Connect (OSTI)

In this study, a hydrodynamic model based on the unstructured-grid finite volume coastal ocean model (FVCOM) was developed for Bellingham Bay, Washington. The model simulates water surface elevation, velocity, temperature, and salinity in a three-dimensional domain that covers the entire Bellingham Bay and adjacent water bodies, including Lummi Bay, Samish Bay, Padilla Bay, and Rosario Strait. The model was developed using Pacific Northwest National Laboratorys high-resolution Puget Sound and Northwest Straits circulation and transport model. A sub-model grid for Bellingham Bay and adjacent coastal waters was extracted from the Puget Sound model and refined in Bellingham Bay using bathymetric light detection and ranging (LIDAR) and river channel cross-section data. The model uses tides, river inflows, and meteorological inputs to predict water surface elevations, currents, salinity, and temperature. A tidal open boundary condition was specified using standard National Oceanic and Atmospheric Administration (NOAA) predictions. Temperature and salinity open boundary conditions were specified based on observed data. Meteorological forcing (wind, solar radiation, and net surface heat flux) was obtained from NOAA real observations and National Center for Environmental Prediction North American Regional Analysis outputs. The model was run in parallel with 48 cores using a time step of 2.5 seconds. It took 18 hours of cpu time to complete 26 days of simulation. The model was calibrated with oceanographic field data for the period of 6/1/2009 to 6/26/2009. These data were collected specifically for the purpose of model development and calibration. They include time series of water-surface elevation, currents, temperature, and salinity as well as temperature and salinity profiles during instrument deployment and retrieval. Comparisons between model predictions and field observations show an overall reasonable agreement in both temporal and spatial scales. Comparisons of root mean square error values for surface elevation, velocity, temperature, and salinity time series are 0.11 m, 0.10 m/s, 1.28oC, and 1.91 ppt, respectively. The model was able to reproduce the salinity and temperature stratifications inside Bellingham Bay. Wetting and drying processes in tidal flats in Bellingham Bay, Samish Bay, and Padilla Bay were also successfully simulated. Both model results and observed data indicated that water surface elevations inside Bellingham Bay are highly correlated to tides. Circulation inside the bay is weak and complex and is affected by various forcing mechanisms, including tides, winds, freshwater inflows, and other local forcing factors. The Bellingham Bay model solution was successfully linked to the NOAA oil spill trajectory simulation model General NOAA Operational Modeling Environment (GNOME). Overall, the Bellingham Bay model has been calibrated reasonably well and can be used to provide detailed hydrodynamic information in the bay and adjacent water bodies. While there is room for further improvement with more available data, the calibrated hydrodynamic model provides useful hydrodynamic information in Bellingham Bay and can be used to support sediment transport and water quality modeling as well as assist in the design of nearshore restoration scenarios.

Wang, Taiping; Yang, Zhaoqing; Khangaonkar, Tarang

2010-04-22T23:59:59.000Z

356

Redesign of turbine-pump impeller and diffuser using hydrodynamic design techniques. Final report  

SciTech Connect (OSTI)

It is indicated that in 1976 the average operating efficiency of well irrigation pumps in the US, including losses in the column pipe and line shaft, was 55.5%, but information is presented to show that losses in a pumping system can be reduced and that it is possible to reach a goal of 82% system efficiency. Hydrodynamic design methods which are used to analyze and modify a commercially available pump are presented. The results of tests with the pump are presented for which delivery losses were reduced by means of a packer at the pump and for which line shaft losses were reduced by means of a high strength line shaft. Methods of designing pumps that have a broader high efficiency range are explored, and a design approach for doing so is presented. The method was not evaluated experimentally. (MCW)

Hamrick, J.T.

1980-04-01T23:59:59.000Z

357

Hydrodynamic Optimization Method and Design Code for Stall-Regulated Hydrokinetic Turbine Rotors  

SciTech Connect (OSTI)

This report describes the adaptation of a wind turbine performance code for use in the development of a general use design code and optimization method for stall-regulated horizontal-axis hydrokinetic turbine rotors. This rotor optimization code couples a modern genetic algorithm and blade-element momentum performance code in a user-friendly graphical user interface (GUI) that allows for rapid and intuitive design of optimal stall-regulated rotors. This optimization method calculates the optimal chord, twist, and hydrofoil distributions which maximize the hydrodynamic efficiency and ensure that the rotor produces an ideal power curve and avoids cavitation. Optimizing a rotor for maximum efficiency does not necessarily create a turbine with the lowest cost of energy, but maximizing the efficiency is an excellent criterion to use as a first pass in the design process. To test the capabilities of this optimization method, two conceptual rotors were designed which successfully met the design objectives.

Sale, D.; Jonkman, J.; Musial, W.

2009-08-01T23:59:59.000Z

358

Flow-field dynamics during droplet formation by dripping in hydrodynamic-focusing microfluidics  

Science Journals Connector (OSTI)

Using microscopic particle image velocimetry, we examine the flow field around an oil droplet as it is formed by hydrodynamic focusing in an aqueous solution using a pressure-driven cross-channel microfluidic device. By detecting the temporal dependence of the instantaneous flow fields of the continuous phase in the dripping regime, we show that shear is not the primary mechanism that initiates droplet formation in our low flow rate and moderate capillary number experimental conditions. Instead, the advancing finger of oil partially and temporarily plugs the outlet channel, creating a pressure difference that builds up and is released when water from the side channels pushes the tip of the finger into the outlet channel, thereby facilitating the birth of the droplet by interfacial pinch-off that is primarily initiated by an extensional flow.

D. Funfschilling; H. Debas; H.-Z. Li; T. G. Mason

2009-07-06T23:59:59.000Z

359

Exact solution of the 1D Riemann problem in Newtonian and relativistic hydrodynamics  

E-Print Network [OSTI]

Some of the most interesting scenarios that can be studied in astrophysics, contain fluids and plasma moving under the influence of strong gravitational fields. To study these problems it is required to implement numerical algorithms robust enough to deal with the equations describing such scenarios, which usually involve hydrodynamical shocks. It is traditional that the first problem a student willing to develop research in this area is to numerically solve the one dimensional Riemann problem, both Newtonian and relativistic. Even a more basic requirement is the construction of the exact solution to this problem in order to verify that the numerical implementations are correct. We describe in this paper the construction of the exact solution and a detailed procedure of its implementation.

F. D. Lora-Clavijo; J. P. Cruz-Perez; F. S. Guzman; J. A. Gonzalez

2013-03-16T23:59:59.000Z

360

Single molecule study of DNA collision with elliptical nanoposts conveyed by hydrodynamics  

E-Print Network [OSTI]

Periodic arrays of micro- or nano-pillars constitute solid state matrices with excellent properties for DNA size separation. Nanofabrication technologies offer many solutions to tailor the geometry of obstacle arrays, yet most studies have been conducted with cylinders arranged in hexagonal lattices. In this report, we investigate the dynamics of single DNA collision with elliptical nanoposts using hydrodynamic actuation. Our data shows that the asymmetry of the obstacles has minor effect on unhooking dynamics, and thus confirms recent predictions obtained by Brownian dynamics simulations. In addition, we show that the disengagement dynamics are correctly predicted by models of electrophoresis, and propose that this consistency is associated to the confinement in slit-like channels. We finally conclude that elliptical posts are expected to marginally improve the performances of separation devices.

Viero, Yannick; Fouet, Marc; Bancaud, Aurlien

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
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361

Soot blower optimization; Part 1: Fundamental hydrodynamics of a soot blower nozzle and jet  

SciTech Connect (OSTI)

The fundamental hydrodynamics of soot blower nozzles and jets are examined. For currently available nozzles, a substantial fraction of the energy available in the steam jet is dissipated as the steam passes through a shock wave only a few jet diameters beyond the nozzle outlet. Only a small fraction of the initial energy is delivered to the heat-transfer surface for cleaning. Efforts to increase the delivered energy by raising the upstream steam pressure above the design condition produces a larger shock wave and only a small increase in delivered energy. Nozzle design should be changed to permit full expansion of the steam before it leaves the nozzle. This would eliminate the shock wave and substantially improve soot blower performance.

Jameel, M.I.; Cormack, D.E.; Tran, H. (Univ. of Toronto, Ontario (Canada). Dept. of Chemical Engineering and Applied Chemistry); Moskal, T.E. (Diamond Power Specialty Corp., Lancaster, OH (United States))

1994-05-01T23:59:59.000Z

362

Radiative Hydrodynamic Models of the Optical and Ultraviolet Emission from Solar Flares  

E-Print Network [OSTI]

We report on radiative hydrodynamic simulations of moderate and strong solar flares. The flares were simulated by calculating the atmospheric response to a beam of non-thermal electrons injected at the apex of a one-dimensional closed coronal loop, and include heating from thermal soft X-ray, extreme ultraviolet and ultraviolet (XEUV) emission. The equations of radiative transfer and statistical equilibrium were treated in non-LTE and solved for numerous transitions of hydrogen, helium, and Ca II allowing the calculation of detailed line profiles and continuum emission. This work improves upon previous simulations by incorporating more realistic non-thermal electron beam models and includes a more rigorous model of thermal XEUV heating. We find XEUV backwarming contributes less than 10% of the heating, even in strong flares. The simulations show elevated coronal and transition region densities resulting in dramatic increases in line and continuum emission in both the UV and optical regions. The optical continuum reaches a peak increase of several percent which is consistent with enhancements observed in solar white light flares. For a moderate flare (~M-class), the dynamics are characterized by a long gentle phase of near balance between flare heating and radiative cooling, followed by an explosive phase with beam heating dominating over cooling and characterized by strong hydrodynamic waves. For a strong flare (~X-class), the gentle phase is much shorter, and we speculate that for even stronger flares the gentle phase may be essentially non-existent. During the explosive phase, synthetic profiles for lines formed in the upper chromosphere and transition region show blue shifts corresponding to a plasma velocity of ~120 km/s, and lines formed in the lower chromosphere show red shifts of ~40 km/s.

J. C. Allred; S. L. Hawley; W. P. Abbett; M. Carlsson

2005-07-13T23:59:59.000Z

363

NMR imaging and hydrodynamic analysis of neutrally buoyant non-Newtonian slurry flows  

SciTech Connect (OSTI)

The flow of solids loaded suspension in cylindrical pipes has been the object of intense experimental and theoretical investigations in recent years. These types of flows are of great interest in chemical engineering because of their important use in many industrial manufacturing processes. Such flows are for example encountered in the manufacture of solid-rocket propellants, advanced ceramics, reinforced polymer composites, in heterogenous catalytic reactors, and in the pipeline transport of liquid-solids suspensions. In most cases, the suspension microstructure and the degree of solids dispersion greatly affect the final performance of the manufactured product. For example, solid propellant pellets need to be extremely-well dispersed in gel matrices for use as rocket engine solid fuels. The homogeneity of pellet dispersion is critical to allow good uniformity of the burn rate, which in turn affects the final mechanical performance of the engine. Today`s manufacturing of such fuels uses continuous flow processes rather than batch processes. Unfortunately, the hydrodynamics of such flow processes is poorly understood and is difficult to assess because it requires the simultaneous measurements of liquid/solids phase velocities and volume fractions. Due to the recent development in pulsed Fourier Transform NMR imaging, NMR imaging is now becoming a powerful technique for the non intrusive investigation of multi-phase flows. This paper reports and exposes a state-of-the-art experimental and theoretical methodology that can be used to study such flows. The hydrodynamic model developed for this study is a two-phase flow shear thinning model with standard constitutive fluid/solids interphase drag and solids compaction stresses. this model shows good agreement with experimental data and the limitations of this model are discussed.

Bouillard, J.X. [Argonne National Lab., IL (United States); Sinton, S.W. [Lockheed Missiles and Space Co., Palo Alto, CA (United States). Research Lab.

1995-02-01T23:59:59.000Z

364

ZERH Training: San Diego, CA  

Broader source: Energy.gov [DOE]

This 3.5-hour training provides builders with a comprehensive review of zero energy-ready home construction including the business case, detailed specifications, and opportunities to be recognized...

365

Solar Policy Environment: San Diego  

Broader source: Energy.gov [DOE]

The objective of this project is to support the Citys Green Vision, which is to ultimately ensure that 100% of the citys electricity needs are met by renewable resources. Over a 24-moth period, the City will implement strategies to achieve a 15% increase in solar installations in San Jose, a 50% increased awareness and knowledge in the community, and more opportunities to purchase or invest in green power.

366

Cloudy Skies R. N. Byrne, D. N. Arion, and F. Malvagi Science Applications International Corporation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

R. N. Byrne, D. N. Arion, and F. Malvagi R. N. Byrne, D. N. Arion, and F. Malvagi Science Applications International Corporation San Diego, CA 92121-1578 Y. Serra and R.C.J. Somerville Scripps Institution of Oceanography University of California, San Diego La Jolla, CA 92093-0224 G. C. Pomraning and BJ Su School of Engineering and Applied Science, UCLA University of California, Los Angeles Los Angeles, CA Thesis 2. Theory of Stochastic Transfer. We have shown that the Titov and Pomraning-Levermore solutions to a certain problem in stochastic transfer, though apparently very different, can be reconciled. 3. Effect on Model Calculations. We have used the Scripps Single Column Model as a stand-in for a GCM in an investigation of the effect of our first functional correction tables on climate prediction.

367

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 to June 2011 1 to June 2011 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory August 4 2011 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Milestone Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

368

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

09 to March 2009 09 to March 2009 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory April 30, 2009 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Cost Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

369

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

10 to June 2010 10 to June 2010 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory August 2, 2010 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Cost Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

370

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

0 to March 2010 0 to March 2010 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory April 12, 2010 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Cost Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

371

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 to September 2011 1 to September 2011 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory October 27, 2011 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Milestone Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

372

vogelmann-98.pdf  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

3 3 Constraints on Excess Absorption: Computations by a Broadband Monte Carlo Model A. M. Vogelmann, I. A. Podgorny, and V. Ramanathan Center for Atmospheric Sciences & Center for Clouds, Chemistry and Climate Scripps Institution of Oceanography University of California, San Diego San Diego, California Introduction and Motivation The topic of excess absorption has motivated us to scrutinize our understanding of atmospheric radiative transfer and the potential effects of uncertainties therein. Because water vapor is a primary absorber of solar radiation, our group first focused on examining the potential uncertainties in water vapor transmission models using Atmospheric Radiation Measurement (ARM) data. The results, presented at last year's ARM Science Team

373

Numerical Simulation of Hydrodynamics of a Heavy Liquid Drop Covered by Vapor Film in a Water Pool  

SciTech Connect (OSTI)

A numerical study on the hydrodynamics of a droplet covered by vapor film in water pool is carried out. Two level set functions are used as to implicitly capture the interfaces among three immiscible fluids (melt-drop, vapor and coolant). This approach leaves only one set of conservation equations for the three phases. A high-order Navier-Stokes solver, called Cubic-Interpolated Pseudo-Particle (CIP) algorithm, is employed in combination with level set approach, which allows large density ratios (up to 1000), surface tension and jump in viscosity. By this calculation, the hydrodynamic behavior of a melt droplet falling into a volatile coolant is simulated, which is of great significance to reveal the mechanism of steam explosion during a hypothetical severe reactor accident. (authors)

Ma, W.M.; Yang, Z.L.; Giri, A.; Sehgal, B.R. [Royal Institute of Technology (KTH), Drottning Kristinas vaeg 33 A, 100 44, Stockholm (Sweden)

2002-07-01T23:59:59.000Z

374

Design of a free-running, 1/30th Froude scaled model destroyer for in-situ hydrodynamic flow visualization  

E-Print Network [OSTI]

Hydrodynamic flow visualization techniques of scaled hull forms and propellers are typically limited to isolating certain operating conditions in a tow tank, circulation tunnel, or large maneuvering basin. Although cost ...

Cope, David M. (David Michael)

2012-01-01T23:59:59.000Z

375

Influence of Water Allocation and Freshwater Inflow on Oyster Production: A HydrodynamicOyster Population Model for Galveston Bay, Texas, USA  

Science Journals Connector (OSTI)

A hydrodynamicoyster population model was developed to assess the effect of changes in freshwater inflow on oyster populations in Galveston Bay, Texas, USA. The population model includes the...Perkinsus marinus,

ERIC N. POWELL; JOHN M. KLINCK; EILEEN E. HOFMANN

2003-01-01T23:59:59.000Z

376

Two-and three-dimensional modeling and optimization applied to the design of a fast hydrodynamic focusing microfluidic mixer for protein folding  

E-Print Network [OSTI]

focusing microfluidic mixer for protein folding Benjamin Ivorra, Juana L. Redondo, Juan G. Santiago, Pilar of a fast hydrodynamic focusing microfluidic mixer for protein folding Benjamin Ivorra,1,a) Juana L. Redondo

Santiago, Juan G.

377

Depositional environment and hydrodynamic flow in Guadalupian Cherry Canyon sandstone, West Ford and West Geraldine fields, Delaware Basin, Texas  

E-Print Network [OSTI]

and entrapment of hydrocarbons. Delaware Mountain Group sediments are currently generating oil. Decementation enhances the reservoir by the formation of secondary porosity. The reservoir sandstones have an aver age porosity of 26$ and an aver age permeability... of 24 md. Oil accumulates in stratigraphic traps located along the updip meander loops of tur bidite channels. A tilted oil/water contact in West Ford and West Ger aldine fields indicates that hydrodynamic flow is pr esent. Heads calculated...

Linn, Anne Marie

2012-06-07T23:59:59.000Z

378

The hydrodynamics of relict cosmological H?i i regions: impact of the IGM  

Science Journals Connector (OSTI)

Discrete sources of photoionizing radiation present at the time the intergalactic medium is largely neutral will create expanding H?i i regions. A source which turns off or dims quickly enough will not be able to maintain the advance of its ionization front indefinitely. The high pressure of the relict H?i i region will then drive a shock into the cold neutral ambient medium. We discuss the hydrodynamical evolution of relict cosmological H?i i regions generated at redshifts z?515. A thin shell of shocked material develops around the H?i i region. The peculiar velocity of the shell is typically 1020 km s? 1. The dense shell may cool and fragment into objects with baryonic masses as high as 106108 M ? and column densities of order 101 9 cm? 2. These values are independent of the nature of the photoionizing source. They are set only by the density of the IGM the sound speed of 104 K gas and the age of the shell. The shock propagation ceases once the filling factor of the H?i i regions reaches unity and the IGM is photoionized. The clouds formed may account for the Ly? forest seen in the spectra of high redshift QSOs. Gravitationally bound fragments may be candidates for blue?excess galaxies at high redshift.

Avery Meiksin; Piero Madau

1991-01-01T23:59:59.000Z

379

Three-dimensional hydrodynamic simulations of asymmetric pulsar wind bow shocks  

E-Print Network [OSTI]

We present three-dimensional, nonrelativistic, hydrodynamic simulations of bow shocks in pulsar wind nebulae. The simulations are performed for a range of initial and boundary conditions to quantify the degree of asymmetry produced by latitudinal variations in the momentum flux of the pulsar wind, radiative cooling in the postshock flow, and density gradients in the interstellar medium (ISM). We find that the bow shock is stable even when travelling through a strong ISM gradient. We demonstrate how the shape of the bow shock changes when the pulsar encounters density variations in the ISM. We show that a density wall can account for the peculiar bow shock shapes of the nebulae around PSR J2124-3358 and PSR B0740-28. A wall produces kinks in the shock, whereas a smooth ISM density gradient tilts the shock. We conclude that the anisotropy of the wind momentum flux alone cannot explain the observed bow shock morphologies but it is instead necessary to take into account external effects. We show that the analytic (single layer, thin shell) solution is a good approximation when the momentum flux is anisotropic, fails for a steep ISM density gradient, and ap- proaches the numerical solution for efficient cooling. We provide analytic expressions for the latitudinal dependence of a vacuum-dipole wind and the associated shock shape, and compare the results to a split-monopole wind. We find that we are unable to distinguish between these two wind models purely from the bow shock morphology.

M. Vigelius; A. Melatos; S. Chatterjee; B. M. Gaensler; P. Ghavamian

2006-10-16T23:59:59.000Z

380

On the relevance of subcritical hydrodynamic turbulence to accretion disk transport  

E-Print Network [OSTI]

Hydrodynamic unstratified keplerian flows are known to be linearly stable at all Reynolds numbers, but may nevertheless become turbulent through nonlinear mechanisms. However, in the last ten years, conflicting points of view have appeared on this issue. We have revisited the problem through numerical simulations in the shearing sheet limit. It turns out that the effect of the Coriolis force in stabilizing the flow depends on whether the flow is cyclonic (cooperating shear and rotation vorticities) or anticyclonic (competing shear and rotation vorticities); keplerian flows are anticyclonic. We have obtained the following results: i/ The Coriolis force does not quench turbulence in subcritical flows; ii/ The resolution demand, when moving away from the marginal stability boundary, is much more severe for anticyclonic flows than for cyclonic ones. Presently available computer resources do not allow numerical codes to reach the keplerian regime. iii/ The efficiency of turbulent transport is directly correlated to the Reynolds number of transition to turbulence $Rg$, in such a way that the Shakura-Sunyaev parameter $\\alpha\\sim 1/Rg$. iv/ Even the most optimistic extrapolations of our numerical data show that subcritical turbulent transport would be too inefficient in keplerian flows by several orders of magnitude for astrophysical purposes. v/ Our results suggest that the data obtained for keplerian-like flows in a Taylor-Couette settings are largely affected by secondary flows, such as Ekman circulation.

G. Lesur; P-Y. Longaretti

2005-09-19T23:59:59.000Z

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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381

Hydrodynamic flow in heavy-ion collisions with large hadronic viscosity  

SciTech Connect (OSTI)

Using the (2+1)-dimensional viscous hydrodynamic code vish2+1 with a temperature-dependent specific shear viscosity ({eta}/s)(T), we present a detailed study of the influence of a large hadronic shear viscosity and its corresponding relaxation time {tau}{sub {pi}} on the transverse momentum spectra and elliptic flow of hadrons produced in 200A GeV Au+Au collisions. Although theory, in principle, predicts a well-defined relation {tau}{sub {pi}T}={kappa}(T)x({eta}/s)(T), the precise form of {kappa}(T) for the matter created in relativistic heavy-ion collisions is not known. For the popular choice {kappa}=3 the hadron spectra are found to be insensitive to a significant rise of {eta}/s in the hadronic stage, whereas their differential elliptic flow v{sub 2}(p{sub T}) is strongly suppressed by large hadronic viscosity. The large viscous effects on v{sub 2} are strongly reduced if (as theoretically expected) {kappa}(T) is allowed to grow with decreasing temperature in the hadronic stage. This implies that, until reliable calculations of {kappa}(T) become available, an extraction of the hadronic shear viscosity from a comparison between vish2+1 and a microscopic hadron cascade or experimental data requires a simultaneous fit of ({eta}/s)(T) and {kappa}(T).

Shen Chun; Heinz, Ulrich [Department of Physics, Ohio State University, Columbus, Ohio 43210-1117 (United States)

2011-04-15T23:59:59.000Z

382

Hydrodynamic modeling of deconfinement phase transition in heavy-ion collisions at NICA-FAIR energies  

E-Print Network [OSTI]

We use (3+1) dimensional ideal hydrodynamics to describe the space-time evolution of strongly interacting matter created in Au+Au and Pb+Pb collisions. The model is applied for the domain of bombarding energies 1-160 AGeV which includes future NICA and FAIR experiments. Two equations of state are used: the first one corresponding to resonance hadron gas and the second one including the deconfinement phase transition. The initial state is represented by two Lorentz-boosted nuclei. Dynamical trajectories of matter in the central box of the system are analyzed. They can be well represented by a fast shock-wave compression followed by a relatively slow isentropic expansion. The parameters of collective flows and hadronic spectra are calculated under assumption of the isochronous freeze-out. It is shown that the deconfinement phase transition leads to broadening of proton rapidity distributions, increase of elliptic flows and formation of the directed antiflow in the central rapidity region. These effects are most pronounced at bombarding energies around 10 AGeV, when the system spends the longest time in the mixed phase. From the comparison with three-fluid calculations we conclude that the transparency effects are not so important in central collisions at NICA-FAIR energies (below 30 AGeV).

A. V. Merdeev; L. M. Satarov; I. N. Mishustin

2011-03-21T23:59:59.000Z

383

Lattice Boltzmann method for relativistic hydrodynamics: Issues on conservation law of particle number and discontinuities  

E-Print Network [OSTI]

In this paper, we aim to address several important issues about the recently developed lattice Boltzmann (LB) model for relativistic hydrodynamics [M. Mendoza et al., Phys. Rev. Lett. 105, 014502 (2010); Phys. Rev. D 82, 105008 (2010)]. First, we study the conservation law of particle number in the relativistic LB model. Through the Chapman-Enskog analysis, it is shown that in the relativistic LB model the conservation equation of particle number is a convection-diffusion equation rather than a continuity equation, which makes the evolution of particle number dependent on the relaxation time. Furthermore, we investigate the origin of the discontinuities appeared in the relativistic problems with high viscosities, which were reported in a recent study [D. Hupp et al., Phys. Rev. D 84, 125015 (2011)]. A multiple-relaxation-time (MRT) relativistic LB model is presented to examine the influences of different relaxation times on the discontinuities. Numerical experiments show the discontinuities can be eliminated by setting the relaxation time $\\tau_e$ (related to the bulk viscosity) to be sufficiently smaller than the relaxation time $\\tau_v$ (related to the shear viscosity). Meanwhile, it is found that the relaxation time $\\tau_\\varepsilon$, which has no effect on the conservation equations at the Navier-Stokes level, will affect the numerical accuracy of the relativistic LB model. Moreover, the accuracy of the relativistic LB model for simulating moderately relativistic problems is also investigated.

Q. Li; K. H. Luo; X. J. Li

2012-11-14T23:59:59.000Z

384

Nonlinear effects on hydrodynamic pressure field caused by ship moving at supercritical speed in shallow water  

Science Journals Connector (OSTI)

Abstract Based on the shallow-water wave potential flow theory and the assumption of a slender ship, a mathematical model has been established for the pressure field caused by ship moving at supercritical speed in shallow water, with nonlinear and dispersive effects taken into account. The finite difference method is used for the numerical calculation of the ship hydrodynamic pressure field (SHPF), with the central and upwind difference schemes as a combination for the second derivative of the nonlinear term. And the artificial viscous terms are added in the hull and upstream boundary conditions to ensure the stability of solving the nonlinear equation. The comparison between the calculated results and the experimental results shows that both the mathematical model and the calculation method are effective and feasible. The analysis of the nonlinear effects of different-depth water, different depth Froude number and different-width channel on SHPF indicates that the closer to the critical speed the ship in sailing, the narrower the channel becomes, the greater the nonlinear effects on SHPF are.

Hui Deng; Zhi-hong Zhang; Ju-bin Liu; Jian-nong Gu

2014-01-01T23:59:59.000Z

385

Solar Flare Chromospheric Line Emission: Comparison Between IBIS High-resolution Observations and Radiative Hydrodynamic Simulations  

E-Print Network [OSTI]

Solar flares involve impulsive energy release, which results in enhanced radiation in a broad spectral and at a wide height range. In particular, line emission from the chromosphere (lower atmosphere) can provide critical diagnostics of plasma heating processes. Thus, a direct comparison between high-resolution spectroscopic observations and advanced numerical modeling results can be extremely valuable, but has not been attempted so far. We present in this paper such a self-consistent investigation of an M3.0 flare observed by the Dunn Solar Telescope's (DST) Interferometric Bi-dimensional Spectrometer (IBIS) on 2011 September 24 that we have modeled with the radiative hydrodynamic code RADYN (Carlsson & Stein 1992, 1997; Abbett & Hawley 1999; Allred et al. 2005). We obtained images and spectra of the flaring region with IBIS in H$\\alpha$ 6563 \\AA\\ and Ca II 8542 \\AA, and with the Reuven Ramaty High Energy Solar Spectroscope Imager (RHESSI) in X-rays. The latter was used to infer the non-thermal elect...

da Costa, Fatima Rubio; Petrosian, Vah; Dalda, Alberto Sainz; Liu, Wei

2014-01-01T23:59:59.000Z

386

Transient hydrodynamic, heat and mass transfer in a salinity gradient solar pond: A numerical study  

Science Journals Connector (OSTI)

Abstract The impoverishment of our planet in non-renewable energies has incited researchers to design salinity gradient solar ponds to collect and store solar energy at a lower cost. It is in this context that the present research work lies to focus on the numerical study of the transient hydrodynamic, heat and mass transfer in a salinity gradient solar pond. The problem is tackled using the dimensionless governing equations of NavierStokes, thermal energy and mass transfer, which are solved numerically by finite-volume method to provide the temperature, concentration and velocity fields in transient regime. The pond is filled with salty water of various salinities to form three zones of salty water: Upper Convective Zone (UCZ), Non-Convective Zone (NCZ) and Lower Convective Zone (LCZ). To prevent convective movements induced by the internal heating of salty water due to solar radiation absorption, a salinity gradient is used in the solar pond. Representative results illustrating the influence of internal Rayleigh number on the thermal performance of the pond and the effect of the aspect ratio on the distribution of temperature and velocity fields in the salinity gradient solar pond (SGSP) are discussed. In addition, results for the transient average temperature of UCZ and LCZ are presented and discussed for various parametric conditions.

Ridha Boudhiaf; Mounir Baccar

2014-01-01T23:59:59.000Z

387

Investigations of Protostellar Outflow Launching and Gas Entrainment: Hydrodynamic Simulations and Molecular Emission  

E-Print Network [OSTI]

We investigate protostellar outflow evolution, gas entrainment, and star formation efficiency using radiation-hydrodynamic simulations of isolated, turbulent low-mass cores. We adopt an X-wind launching model, in which the outflow rate is coupled to the instantaneous protostellar accretion rate and evolution. We vary the outflow collimation angle from $\\theta$=0.01-0.1 and find that even well collimated outflows effectively sweep up and entrain significant core mass. The Stage 0 lifetime ranges from 0.14-0.19 Myr, which is similar to the observed Class 0 lifetime. The star formation efficiency of the cores spans 0.41-0.51. In all cases, the outflows drive strong turbulence in the surrounding material. Although the initial core turbulence is purely solenoidal by construction, the simulations converge to approximate equipartition between solenoidal and compressive motions due to a combination of outflow driving and collapse. When compared to a simulation of a cluster of protostars, which is not gravitationally ...

Offner, S S R

2013-01-01T23:59:59.000Z

388

Thin film hydrodynamic lubrication of flying heads in magnetic disk storages  

Science Journals Connector (OSTI)

Typical hydrodynamic lubrication problems commonly encountered in the ultrathin spacing between a computer flying head and a magnetic disk are reviewed. In magnetic disk storages, minimizing the spacing between the head and disk is essential to promote the largest possible increase in magnetic bit density. In the small (nearly 1.0 ?m) spacing that has recently been attained, the rarefaction effects owing to the molecular mean free path become dominant. Specifically, in this paper the three governing equations resulting from the first- and second-order slip-flow models and from the linearized Boltzmann equation are compared. Next, some numerical approaches to eliminating the instability in pressure distribution in the high bearing number region are described. Surface roughness effects are also a principal concern in thin spacing. A mixed lubrication model which enables the analysis of the start/stop operation and the average film thickness theory for one- and two-dimensional roughnesses is summarized. Finally, from the viewpoint of practical head design, the slider dynamic characteristics and related slider design factors are discussed.

Yasunaga Mitsuya

1987-01-01T23:59:59.000Z

389

Efficient Calculation of Dewatered and Entrapped Areas Using Hydrodynamic Modeling and GIS  

SciTech Connect (OSTI)

River waters downstream of a hydroelectric project are often subject to rapidly changing discharge. Abrupt decreases in discharge can quickly dewater and expose some areas and isolate other areas from the main river channel, potentially stranding or entrapping fish, which often results in mortality. A methodology is described to estimate the areas dewatered or entrapped by a specific reduction in upstream discharge. A one-dimensional hydrodynamic model was used to simulate steady flows. Using flow simulation results from the model and a geographic information system (GIS), estimates of dewatered and entrapped areas were made for a wide discharge range. The methodology was applied to the Hanford Reach of the Columbia River in central Washington State. Results showed that a 280 m$^3$/s discharge reduction affected the most area at discharges less than 3400 m$^3$/s. At flows above 3400 m$^3$/s, the affected area by a 280 m$^3$/s discharge reduction (about 25 ha) was relatively constant. A 280 m$^3$/s discharge reduction at lower flows affected about twice as much area. The methodology and resulting area estimates were, at the time of writing, being used to identify discharge regimes, and associated water surface elevations, that might be expected to minimize adverse impacts on juvenile fall chinook salmon (\\emph{Oncorhynchus tshawytscha}) that rear in the shallow near-shore areas in the Hanford Reach.

Richmond, Marshall C.; Perkins, William A.

2009-12-01T23:59:59.000Z

390

The solar photospheric abundance of europium. Results from CO5BOLD 3-D hydrodynamical model atmospheres  

E-Print Network [OSTI]

Context. Europium is an almost pure r-process element, which may be useful as a reference in nucleocosmochronology. Aims. To determine the photospheric solar abundance using CO5BOLD 3-D hydrodynamical model atmospheres. Methods. Disc-centre and integrated-flux observed solar spectra are used. The europium abundance is derived from the equivalent width measurements. As a reference 1D model atmospheres have been used, in addition. Results. The europium photospheric solar abundance is 0.52 +- 0.02 in agreement with previous determinations. We also determine the photospheric isotopic fraction of Eu(151) to be 49 % +- 2.3 % from the intensity spectra and 50% +-2.3 from the flux spectra. This compares well to the the meteoritic isotopic fraction 47.8%. We explore the 3D corrections also for dwarfs and sub-giants in the temperature range ~5000 K to ~6500 K and solar and 1/10--solar metallicities and find them to be negligible for all the models investigated. Conclusions. Our photospheric Eu abundance is in good agreement with previous determinations based on 1D models. This is in line with our conclusion that 3D effects for this element are negligible in the case of the Sun.

A. Mucciarelli; E. Caffau; B. Freytag; H. -G. Ludwig; P. Bonifacio

2008-03-06T23:59:59.000Z

391

Hydrodynamics of Embedded Planets' First Atmospheres. II. A Rapid Recycling of Atmospheric Gas  

E-Print Network [OSTI]

Following Paper I we investigate the properties of atmospheres that form around small protoplanets embedded in a protoplanetary disc by conducting hydrodynamical simulations. These are now extended to three dimensions, employing a spherical grid centred on the planet. Compression of gas is shown to reduce rotational motions. Contrasting the 2D case, no clear boundary demarcates bound atmospheric gas from disc material; instead, we find an open system where gas enters the Bondi sphere at high latitudes and leaves through the midplane regions, or, vice versa, when the disc gas rotates sub-Keplerian. The simulations do not converge to a time-independent solution; instead, the atmosphere is characterized by a time-varying velocity field. Of particular interest is the timescale to replenish the atmosphere by nebular gas, $t_\\mathrm{replenish}$. It is shown that the replenishment rate, $M_\\mathrm{atm}/t_\\mathrm{replenish}$, can be understood in terms of a modified Bondi accretion rate, $\\sim$$R_\\mathrm{Bondi}^2\\rho...

Ormel, Chris W; Kuiper, Rolf

2014-01-01T23:59:59.000Z

392

Hydrodynamic Modeling of Air Blast Propagation from the Humble Redwood Chemical High Explosive Detonations Using GEODYN  

SciTech Connect (OSTI)

Two-dimensional axisymmetric hydrodynamic models were developed using GEODYN to simulate the propagation of air blasts resulting from a series of high explosive detonations conducted at Kirtland Air Force Base in August and September of 2007. Dubbed Humble Redwood I (HR-1), these near-surface chemical high explosive detonations consisted of seven shots of varying height or depth of burst. Each shot was simulated numerically using GEODYN. An adaptive mesh refinement scheme based on air pressure gradients was employed such that the mesh refinement tracked the advancing shock front where sharp discontinuities existed in the state variables, but allowed the mesh to sufficiently relax behind the shock front for runtime efficiency. Comparisons of overpressure, sound speed, and positive phase impulse from the GEODYN simulations were made to the recorded data taken from each HR-1 shot. Where the detonations occurred above ground or were shallowly buried (no deeper than 1 m), the GEODYN model was able to simulate the sound speeds, peak overpressures, and positive phase impulses to within approximately 1%, 23%, and 6%, respectively, of the actual recorded data, supporting the use of numerical simulation of the air blast as a forensic tool in determining the yield of an otherwise unknown explosion.

Chipman, V D

2011-09-20T23:59:59.000Z

393

A new multidimensional, energy-dependent two-moment transport code for neutrino-hydrodynamics  

E-Print Network [OSTI]

We present the new code ALCAR developed to model multidimensional, multi energy-group neutrino transport in the context of supernovae and neutron-star mergers. The algorithm solves the evolution equations of the 0th- and 1st-order angular moments of the specific intensity, supplemented by an algebraic relation for the 2nd-moment tensor to close the system. The scheme takes into account frame-dependent effects of order O(v/c) as well as the most important types of neutrino interactions. The transport scheme is significantly more efficient than a multidimensional solver of the Boltzmann equation, while it is more accurate and consistent than the flux-limited diffusion method. The finite-volume discretization of the essentially hyperbolic system of moment equations employs methods well-known from hydrodynamics. For the time integration of the potentially stiff moment equations we employ a scheme in which only the local source terms are treated implicitly, while the advection terms are kept explicit, thereby allo...

Just, Oliver; Janka, H -Thomas

2015-01-01T23:59:59.000Z

394

Simulation and experimental verification of a hydrodynamic model for a dual fluidized Bed gasifier  

Science Journals Connector (OSTI)

Abstract We propose a revised 2-D energy-minimization multi-scale (EMMS) model based on a two-fluid model to perform the hydrodynamic character analysis of a pilot-scale full-loop dual fluidized bed gasifier (DFBG), which consists of a riser, a cyclone with a down-comer, a bubbling fluidized bed (BFB), and a loop-seal. The EMMS model is used to analyze the interaction force between the gas and solid phases in the DFBG. For comparison, O'Brien & Syamlal's drag heterogeneous force coefficient correction is also analyzed. The instantaneous particle profiles are described by the calculated results. The local and overall flow characteristics are determined by the solids concentration under different fluidization conditions. The effects of the gas velocities in the riser and the recycle gas velocities in the U loop seal on the axial solids concentration and solids circulation profiles, as well as the flow heterogeneity in sub-zones of the riser are investigated. The numerical results are in good agreement with the experimental data, indicating that the EMMS model is appropriate to simulate the heterogeneous gassolids two-phase flow in DFBG.

Xueyao Wang; Jing Lei; Xiang Xu; Zhengzhong Ma; Yunhan Xiao

2014-01-01T23:59:59.000Z

395

Influence of geometric parameters on the hydrodynamics control of solar chimney  

Science Journals Connector (OSTI)

Abstract Hydrogen generating station (HGS) by water electrolysis is based on three principal compartments: hydraulic pumping system, water electrolysis process and energy supply whose can be free source like solar chimney power plans (SCPP). The HGS can be controlled if governed one of these three compartments especially the energy supply SCPP. The aim of this study is to investigate numerically the airflow behavior through a Solar Chimney. The transport equations that describe the flow, for different geometric tower parameters were modeled and solved numerically using the finite volume method. This methodology allows us a detailed visualization of the effects of some geometrical parameters such as the tower height and tower radius. It has been shown in this work that the dimensions of the tower play an important role in designing of such systems by increasing or decreasing the mass flow rate. Consequently, the hydrodynamic field is directly controlled by varying the tower dimensions. However the thermal field is indirectly controlled by decreasing the system mean temperature.

M. Lebbi; T. Chergui; H. Boualit; I. Boutina

2014-01-01T23:59:59.000Z

396

3D Hydrodynamic & Radiative Transfer Models of X-ray Emission from Colliding Wind Binaries  

E-Print Network [OSTI]

Colliding wind binaries (CWBs) are unique laboratories for X-ray astrophysics. The massive stars in these systems possess powerful stellar winds with speeds up to $\\sim$3000 km s$^{-1}$, and their collision leads to hot plasma (up to $\\sim10^8$K) that emit thermal X-rays (up to $\\sim$10 keV). Many X-ray telescopes have observed CWBs, including Suzaku, and our work aims to model these X-ray observations. We use 3D smoothed particle hydrodynamics (SPH) to model the wind-wind interaction, and then perform 3D radiative transfer to compute the emergent X-ray flux, which is folded through X-ray telescopes' response functions to compare directly with observations. In these proceedings, we present our models of Suzaku observations of the multi-year-period, highly eccentric systems $\\eta$ Carinae and WR 140. The models reproduce the observations well away from periastron passage, but only $\\eta$ Carinae's X-ray spectrum is reproduced at periastron; the WR 140 model produces too much flux during this more complicated p...

Russell, Christopher M P; Owocki, Stanley P; Corcoran, Michael F; Hamaguchi, Kenji; Sugawara, Yasuharu

2014-01-01T23:59:59.000Z

397

3D Simulation of Dam-break effect on a Solid Wall using Smoothed Particle Hydrodynamics  

E-Print Network [OSTI]

Dam is built for water supply, water flow or flooding control and electricity energy storage, but in other hand, dam is one of the most dangerous natural disaster in many countries including in Indonesia. The impact of dam break in neighbour area and is huge and many flooding in remote area, as happen in Dam Situ Gintung in Tangerang (close to Jakarta) in 2009. Smoothed Particle Hydrodynamics (SPH), is one of numerical method based on Lagrangian grid which is ap- plied in astrophysical simulation may be used to solve the simulation on dam break effect. The development of SPH methods become alternative methods to solving Navier Stokes equation, which is main key in fluid dynamic simulation. In this paper, SPH is developed for supporting solid par- ticles in use for 3D dam break effect (3D-DBE) simulation. Solid particle have been treated same as fluid particles with additional calculation for converting gained position became translation and rotation of solid object in a whole body. With this capability, the r...

Suprijadi,; Naa, Christian; Putra, Anggy Trisnawan

2013-01-01T23:59:59.000Z

398

The effect of particle inlet conditions on FCC riser hydrodynamics and product yields.  

SciTech Connect (OSTI)

Essential to today's modern refineries and the gasoline production process are fluidized catalytic cracking units. By using a computational fluid dynamics (CFD) code developed at Argonne National Laboratory to simulate the riser, parametric and sensitivity studies were performed to determine the effect of catalyst inlet conditions on the riser hydrodynamics and on the product yields. Simulations were created on the basis of a general riser configuration and operating conditions. The results of this work are indications of riser operating conditions that will maximize specific product yields. The CFD code is a three-dimensional, multiphase, turbulent, reacting flow code with phenomenological models for particle-solid interactions, droplet evaporation, and chemical kinetics. The code has been validated against pressure, particle loading, and product yield measurements. After validation of the code, parametric studies were performed on various parameters such as the injection velocity of the catalyst, the angle of injection, and the particle size distribution. The results indicate that good mixing of the catalyst particles with the oil droplets produces a high degree of cracking in the riser.

Chang, S. L.; Golchert, B.; Lottes, S. A.; Zhou, C. Q.; Huntsinger, A.; Petrick, M.

1999-10-11T23:59:59.000Z

399

Hydrodynamics of cell-cell mechanical signaling in the initial stages of aggregation  

Science Journals Connector (OSTI)

Mechanotactic cell motility has recently been shown to be a key player in the initial aggregation of crawling cells such as leukocytes and amoebae. The effects of mechanotactic signaling in the early aggregation of amoeboid cells are here investigated using a general mathematical model based on known biological evidence. We elucidate the hydrodynamic fundamentals of the direct guiding of a cell through mechanotaxis in the case where one cell transmits a mechanotactic signal through the fluid flow by changing its shape. It is found that any mechanosensing cells placed in the stimulus field of mechanical stress are able to determine the signal transmission direction with a certain angular dispersion which does not preclude the aggregation from happening. The ubiquitous presence of noise is accounted for by the model. Finally, the mesoscopic pattern of aggregation is obtained which constitutes the bridge between, on one hand, the microscopic world where the changes in the cell shape occur and, on the other hand, the cooperative behavior of the cells at the mesoscopic scale.

Roland Bouffanais and Dick K. P. Yue

2010-04-28T23:59:59.000Z

400

SCRIPPS OCEANOGRAPHY SCIENTISTS FIRST SOUNDED THE ALARM A HALF-CENTURY  

E-Print Network [OSTI]

recruited Keeling. Revelle conducted his own pioneering work in climate modification and oceanographic

Russell, Lynn

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

The University of Miami, Nature Publishing Group, and Scripps Florida present  

E-Print Network [OSTI]

) Tom Gingeras (Affymetrix/CSL, USA) Jonathan Haines (Vanderbilt University, USA) James R. Lupski Inc., UK / USA) Andrew G. Clark (Cornell University, USA) Evan Eichler (University of Washington, USA

Cai, Long

402

Scripps Institution of Oceanography Contributions Index Vols. 1-39, 1938-1969  

E-Print Network [OSTI]

paraIle 1 flow Kenney, David W. (with C. Robert Olson, R. W.whale . Kenney, David W. (with R.asphyxia . . Kenney, David W. (with R. W. Elsner and

Anonymous,

1970-01-01T23:59:59.000Z

403

Acknowledgments: UNEP/WMO, IIASA, JRC, US EPA, SEI, Scripps, Middlebury, U York,  

E-Print Network [OSTI]

(particle filters+) ­ Replacing coal in residential stoves ­ Replacing residential wood burning in Industrialized countries ­ Clean-burning cookstoves in developing countries ­ Modern brick kilns ­ Modern coke + Sri Lanka South East Asia China Rice paddies Livestock manure Wastewater Municipal waste Coal mines

404

Scripps Institution of Oceanography Contributions Index Vols. 1-39, 1938-1969  

E-Print Network [OSTI]

economy of coral reefs, Bikini and nearby atolls, Marshallrefraction studies of Bikini and Kwajalein atolls andin Bikini Lagoon ..... ... ...

Anonymous,

1970-01-01T23:59:59.000Z

405

Catalog of the Benthic Invertebrate Collections of the Scripps Institution of Oceanography. Echinodermata  

E-Print Network [OSTI]

S 1265~.3'E Apr. 8, 1961 82m shell dredge Bikini Atoll,1946 Bikini Atoll,1946 Bikini Atoll, 1946 NAGA S9A 60-1077 Gulf of Thailand

Luke, Spencer R

1982-01-01T23:59:59.000Z

406

Catalog of the benthic invertebrate collections of the Scripps Institution of Oceanography. Coelenterata  

E-Print Network [OSTI]

5 mi. W. of Enyu Is. , Bikini 11-15m w/Pyrgomatidae (CHH dr 65. Lagoon near Bikini Island. 7m Coll. John Mann.

Luke, Spencer R.

1998-01-01T23:59:59.000Z

407

Radiation-Hydrodynamic Simulations of Massive Star Formation with Protostellar Outflows  

SciTech Connect (OSTI)

We report the results of a series of AMR radiation-hydrodynamic simulations of the collapse of massive star forming clouds using the ORION code. These simulations are the first to include the feedback effects protostellar outflows, as well as protostellar radiative heating and radiation pressure exerted on the infalling, dusty gas. We find that that outflows evacuate polar cavities of reduced optical depth through the ambient core. These enhance the radiative flux in the poleward direction so that it is 1.7 to 15 times larger than that in the midplane. As a result the radiative heating and outward radiation force exerted on the protostellar disk and infalling cloud gas in the equatorial direction are greatly diminished. The simultaneously reduces the Eddington radiation pressure barrier to high-mass star formation and increases the minimum threshold surface density for radiative heating to suppress fragmentation compared to models that do not include outflows. The strength of both these effects depends on the initial core surface density. Lower surface density cores have longer free-fall times and thus massive stars formed within them undergo more Kelvin contraction as the core collapses, leading to more powerful outflows. Furthermore, in lower surface density clouds the ratio of the time required for the outflow to break out of the core to the core free-fall time is smaller, so that these clouds are consequently influenced by outflows at earlier stages of collapse. As a result, outflow effects are strongest in low surface density cores and weakest in high surface density one. We also find that radiation focusing in the direction of outflow cavities is sufficient to prevent the formation of radiation pressure-supported circumstellar gas bubbles, in contrast to models which neglect protostellar outflow feedback.

Cunningham, A J; Klein, R I; Krumholz, M R; McKee, C F

2011-03-02T23:59:59.000Z

408

Three-dimensional general relativistic hydrodynamics II: long-term dynamics of single relativistic stars  

E-Print Network [OSTI]

This is the second in a series of papers on the construction and validation of a three-dimensional code for the solution of the coupled system of the Einstein equations and of the general relativistic hydrodynamic equations, and on the application of this code to problems in general relativistic astrophysics. In particular, we report on the accuracy of our code in the long-term dynamical evolution of relativistic stars and on some new physics results obtained in the process of code testing. The tests involve single non-rotating stars in stable equilibrium, non-rotating stars undergoing radial and quadrupolar oscillations, non-rotating stars on the unstable branch of the equilibrium configurations migrating to the stable branch, non-rotating stars undergoing gravitational collapse to a black hole, and rapidly rotating stars in stable equilibrium and undergoing quasi-radial oscillations. The numerical evolutions have been carried out in full general relativity using different types of polytropic equations of state using either the rest-mass density only, or the rest-mass density and the internal energy as independent variables. New variants of the spacetime evolution and new high resolution shock capturing (HRSC) treatments based on Riemann solvers and slope limiters have been implemented and the results compared with those obtained from previous methods. Finally, we have obtained the first eigenfrequencies of rotating stars in full general relativity and rapid rotation. A long standing problem, such frequencies have not been obtained by other methods. Overall, and to the best of our knowledge, the results presented in this paper represent the most accurate long-term three-dimensional evolutions of relativistic stars available to date.

J. Font; T. Goodale; S. Iyer; M. Miller; L. Rezzolla; E. Seidel; N. Stergioulas; W. Suen; M. Tobias

2001-10-09T23:59:59.000Z

409

Combined Modeling of Acceleration, Transport, and Hydrodynamic Response in Solar Flares. I. The Numerical Model  

Science Journals Connector (OSTI)

Acceleration and transport of high-energy particles and fluid dynamics of atmospheric plasma are interrelated aspects of solar flares, but for convenience and simplicity they were artificially separated in the past. We present here self-consistently combined Fokker-Planck modeling of particles and hydrodynamic simulation of flare plasma. Energetic electrons are modeled with the Stanford unified code of acceleration, transport, and radiation, while plasma is modeled with the Naval Research Laboratory flux tube code. We calculated the collisional heating rate directly from the particle transport code, which is more accurate than those in previous studies based on approximate analytical solutions. We repeated the simulation of Mariska et al. with an injection of power law, downward-beamed electrons using the new heating rate. For this case, a ~10% difference was found from their old result. We also used a more realistic spectrum of injected electrons provided by the stochastic acceleration model, which has a smooth transition from a quasi-thermal background at low energies to a nonthermal tail at high energies. The inclusion of low-energy electrons results in relatively more heating in the corona (versus chromosphere) and thus a larger downward heat conduction flux. The interplay of electron heating, conduction, and radiative loss leads to stronger chromospheric evaporation than obtained in previous studies, which had a deficit in low-energy electrons due to an arbitrarily assumed low-energy cutoff. The energy and spatial distributions of energetic electrons and bremsstrahlung photons bear signatures of the changing density distribution caused by chromospheric evaporation. In particular, the density jump at the evaporation front gives rise to enhanced emission, which, in principle, can be imaged by X-ray telescopes. This model can be applied to investigate a variety of high-energy processes in solar, space, and astrophysical plasmas.

Wei Liu; Vah Petrosian; John T. Mariska

2009-01-01T23:59:59.000Z

410

COMBINED MODELING OF ACCELERATION, TRANSPORT, AND HYDRODYNAMIC RESPONSE IN SOLAR FLARES. I. THE NUMERICAL MODEL  

SciTech Connect (OSTI)

Acceleration and transport of high-energy particles and fluid dynamics of atmospheric plasma are interrelated aspects of solar flares, but for convenience and simplicity they were artificially separated in the past. We present here self-consistently combined Fokker-Planck modeling of particles and hydrodynamic simulation of flare plasma. Energetic electrons are modeled with the Stanford unified code of acceleration, transport, and radiation, while plasma is modeled with the Naval Research Laboratory flux tube code. We calculated the collisional heating rate directly from the particle transport code, which is more accurate than those in previous studies based on approximate analytical solutions. We repeated the simulation of Mariska et al. with an injection of power law, downward-beamed electrons using the new heating rate. For this case, a {approx}10% difference was found from their old result. We also used a more realistic spectrum of injected electrons provided by the stochastic acceleration model, which has a smooth transition from a quasi-thermal background at low energies to a nonthermal tail at high energies. The inclusion of low-energy electrons results in relatively more heating in the corona (versus chromosphere) and thus a larger downward heat conduction flux. The interplay of electron heating, conduction, and radiative loss leads to stronger chromospheric evaporation than obtained in previous studies, which had a deficit in low-energy electrons due to an arbitrarily assumed low-energy cutoff. The energy and spatial distributions of energetic electrons and bremsstrahlung photons bear signatures of the changing density distribution caused by chromospheric evaporation. In particular, the density jump at the evaporation front gives rise to enhanced emission, which, in principle, can be imaged by X-ray telescopes. This model can be applied to investigate a variety of high-energy processes in solar, space, and astrophysical plasmas.

Liu Wei [Stanford-Lockheed Institute for Space Research, 466 Via Ortega, Cypress Hall, Stanford, CA 94305-4085 (United States); Petrosian, Vahe [Department of Physics, Stanford University, Stanford, CA 94305-4060 (United States); Mariska, John T. [Naval Research Laboratory, Code 7673, Washington, DC 20375-5000 (United States)

2009-09-10T23:59:59.000Z

411

Coalescing Neutron Stars -- a Step Towards Physical Models. I. Hydrodynamic Evolution and Gravitational-Wave Emission  

E-Print Network [OSTI]

We investigate the dynamics and evolution of coalescing neutron stars. Although the code (Piecewise Parabolic Method) is purely Newtonian, we do include the emission of gravitational waves and their backreaction on the hydrodynamic flow. The properties of neutron star matter are described by the physical equation of state of Lattimer \\& Swesty (1991). Energy loss by all types of neutrinos and changes of the electron fraction due to the emission of electron neutrinos and antineutrinos are taken into account by an elaborate ``neutrino leakage scheme''. We simulate the coalescence of two identical, cool neutron stars with a baryonic mass of $\\approx\\!1.6\\,M_\\odot$ and a radius of $\\approx\\!15$~km and with an initial center-to-center distance of 42~km. The initial distributions of density and electron concentration are given from a model of a cold neutron star in hydrostatic equilibrium (central temperature about $8\\,{\\rm MeV}$). We investigate three cases which differ by the initial velocity distribution in the neutron stars, representing different cases of the neutron star spins relative to the direction of the orbital angular momentum vector. Within about 1~ms the neutron stars merge into a rapidly spinning ($P_{\\rm spin}\\approx 1$~ms), high-density body ($\\rho\\approx 10^{14}$~g/cm$^3$) with a surrounding thick disk of material with densities $\\rho\\approx 10^{10}-10^{12}$~g/cm$^3$ and orbital velocities of~0.3--0.5~c. In this work we evaluate the models in detail with respect to the gravitational wave emission using the quadrupole approximation. In a forthcoming paper we will concentrate on the neutrino emission and implications for gamma-ray bursters. A maximum luminosity in excess of $10^{55}$~erg/s is reached for about 1~ms.

M. Ruffert; H. -Th. Janka; G. Schaefer

1995-09-01T23:59:59.000Z

412

Nucleosynthesis-relevant conditions in neutrino-driven supernova outflows. I. Spherically symmetric hydrodynamic simulations  

E-Print Network [OSTI]

We investigate the behavior and consequences of the reverse shock that terminates the supersonic expansion of the baryonic wind which is driven by neutrino heating off the surface of (non-magnetized) new-born neutron stars in supernova cores. To this end we perform long-time hydrodynamic simulations in spherical symmetry. In agreement with previous relativistic wind studies, we find that the neutrino-driven outflow accelerates to supersonic velocities and in case of a compact, about 1.4 solar mass (gravitational mass) neutron star with a radius of about 10 km, the wind reaches entropies of about 100 k_B per nucleon. The wind, however, is strongly influenced by the environment of the supernova core. It is decelerated and shock-heated abruptly by a termination shock that forms when the supersonic outflow collides with the slower preceding supernova ejecta. The radial position of this reverse shock varies with time and depends on the strength of the neutrino wind and the different conditions in progenitor stars with different masses and structure. Its basic properties and behavior can be understood by simple analytic considerations. We demonstrate that the entropy of matter going through the reverse shock can increase to a multiple of the asymptotic wind value. Seconds after the onset of the explosion it therefore can exceed 400 k_B per nucleon. The temperature of the shocked wind has typically dropped to about or less than 10^9 K, and density and temperature in the shock-decelerated matter continue to decrease only very slowly. Such conditions might strongly affect the important phases of supernova nucleosynthesis in a time and progenitor dependent way. (abridged)

A. Arcones; H. -Th. Janka; L. Scheck

2006-12-20T23:59:59.000Z

413

A TWO-MOMENT RADIATION HYDRODYNAMICS MODULE IN ATHENA USING A TIME-EXPLICIT GODUNOV METHOD  

SciTech Connect (OSTI)

We describe a module for the Athena code that solves the gray equations of radiation hydrodynamics (RHD), based on the first two moments of the radiative transfer equation. We use a combination of explicit Godunov methods to advance the gas and radiation variables including the non-stiff source terms, and a local implicit method to integrate the stiff source terms. We adopt the M{sub 1} closure relation and include all leading source terms to O({beta}{tau}). We employ the reduced speed of light approximation (RSLA) with subcycling of the radiation variables in order to reduce computational costs. Our code is dimensionally unsplit in one, two, and three space dimensions and is parallelized using MPI. The streaming and diffusion limits are well described by the M{sub 1} closure model, and our implementation shows excellent behavior for a problem with a concentrated radiation source containing both regimes simultaneously. Our operator-split method is ideally suited for problems with a slowly varying radiation field and dynamical gas flows, in which the effect of the RSLA is minimal. We present an analysis of the dispersion relation of RHD linear waves highlighting the conditions of applicability for the RSLA. To demonstrate the accuracy of our method, we utilize a suite of radiation and RHD tests covering a broad range of regimes, including RHD waves, shocks, and equilibria, which show second-order convergence in most cases. As an application, we investigate radiation-driven ejection of a dusty, optically thick shell in the ISM. Finally, we compare the timing of our method with other well-known iterative schemes for the RHD equations. Our code implementation, Hyperion, is suitable for a wide variety of astrophysical applications and will be made freely available on the Web.

Skinner, M. Aaron; Ostriker, Eve C., E-mail: askinner@astro.umd.edu, E-mail: eco@astro.princeton.edu [Department of Astronomy, University of Maryland, College Park, MD 20742-2421 (United States)

2013-06-01T23:59:59.000Z

414

Assessment of Tidal Energy Removal Impacts on Physical Systems: Development of MHK Module and Analysis of Effects on Hydrodynamics  

SciTech Connect (OSTI)

In this report we describe (1) the development, test, and validation of the marine hydrokinetic energy scheme in a three-dimensional coastal ocean model (FVCOM); and (2) the sensitivity analysis of effects of marine hydrokinetic energy configurations on power extraction and volume flux in a coastal bay. Submittal of this report completes the work on Task 2.1.2, Effects of Physical Systems, Subtask 2.1.2.1, Hydrodynamics and Subtask 2.1.2.3, Screening Analysis, for fiscal year 2011 of the Environmental Effects of Marine and Hydrokinetic Energy project.

Yang, Zhaoqing; Wang, Taiping

2011-09-01T23:59:59.000Z

415

Numerical Analyses of CERN 200GeV/A Heavy-Ion Collisions Based on a Hydrodynamical Model with Phase Transition  

E-Print Network [OSTI]

We numerically analyze recent high energy heavy-ion collision experiments based on a hydrodynamical model with phase transition and discuss a systematic change of initial state of QGP-fluid depending on colliding-nuclei's mass. In a previous paper, we formulated a (3+1)-dimensional hydrodynamical model for quark-gluon plasma with phase transition and discussed numerically the space-time evolution in detail. We here compare the numerical solution with the hadronic distributions given by CERN WA80 and NA35. Systematic analyses of the experiments with various colliding nuclei enable us to discuss the dependences of the initial parameters of the hydrodynamical model on colliding nuclei's mass. Furthermore, extrapolating the present experiments, we derive the possible hadronic distributions for lead-lead 150GeV/A collision.

Shin Muroya; Hiroki Nakamura; Mikio Namiki

1995-02-02T23:59:59.000Z

416

Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint  

SciTech Connect (OSTI)

Hydrodynamic loads on the platforms of floating offshore wind turbines are often predicted with computer-aided engineering tools that employ Morison's equation and/or potential-flow theory. This work compares results from one such tool, FAST, NREL's wind turbine computer-aided engineering tool, and the computational fluid dynamics package, OpenFOAM, for the OC4-DeepCwind semi-submersible analyzed in the International Energy Agency Wind Task 30 project. Load predictions from HydroDyn, the offshore hydrodynamics module of FAST, are compared with high-fidelity results from OpenFOAM. HydroDyn uses a combination of Morison's equations and potential flow to predict the hydrodynamic forces on the structure. The implications of the assumptions in HydroDyn are evaluated based on this code-to-code comparison.

Benitz, M. A.; Schmidt, D. P.; Lackner, M. A.; Stewart, G. M.; Jonkman, J.; Robertson, A.

2014-09-01T23:59:59.000Z

417

Effect of particle size distribution on hydrodynamics and solids back-mixing in CFB risers using CPFD simulation  

Science Journals Connector (OSTI)

Abstract Industrial CFB risers usually handle polydisperse mixtures with broad size distribution, which significantly influenced the performance of the reactors. However, traditional Computational Fluid Dynamics (CFD) models usually assumed that the particle followed the mono-disperse distribution. In the present work, the method of computational particle fluid dynamic (CPFD) was applied for simulating the complex hydrodynamics in the CFB riser with various particle size distributions (PSDs). Two kinds of PSDs, namely Gaussian and Lognormal distribution with various PSD widths, were implemented into the CPFD scheme. With the CPFD method, the present work extensively studied the effects of PSD on the hydrodynamics and on the solids back-mixing. The CPFD results showed that the PSD significantly affected particle's flow behaviors at the lower zone of the riser, while the PSD effects were negligible in the upper part of the riser. This is meaningful for the industrial riser reactors since most of the reaction and transport process occur in this lower zone of the riser. Besides, the simulation results showed that wider PSD dramatically weaken the particle's back-mixing behaviors in the riser. The significant effects of PSD predicted by the CPFD method imply that large errors will be introduced if the mono-disperse assumption is adopted to simulate the experimental CFB riser handling particles with broad size distribution.

Xiaogang Shi; Xingying Lan; Feng Liu; Yinghui Zhang; Jinsen Gao

2014-01-01T23:59:59.000Z

418

Hydrodynamic analysis as an aid in exploration within mature basins: Examples from Sawtooth and Sunburst Reservoirs, northwestern Williston basin  

SciTech Connect (OSTI)

Linking hydrodynamics to detailed stratigraphic and structural analyses is a powerful tool in hydrocarbon exploration in mature basins, In southernmost Canada straddling the Alberta-Saskatchewan border, significant petroleum reserves are encountered within Mesozoic units which are largely controlled by subsurface flow cells. The Jurassic Sawtooth Formation is characterized by an eastward shift from lower shoreface quartzarenites to basinal coquinas. The Sawtooth is a blanket deposit and crops out along the flanks of several Tertiary uplifts in northern Montana. In the subsurface the Sawtooth is draped over several relatively young structures. Potentiometric mapping illustrates a northerly flow orientation within the Sawtooth, and oil pools under artesian conditions are located where flow paths cross steeply flanked structures. The Lower Cretaceous Sunburst Formation is a series of valley-fill sandstones with mainly southwesterly paleoflow orientations. Hydrocarbon pools (e.g., Manyberries field) are located within a regional potentiometric low formed by three converging cells which recharge in the south, northwest, and east. This potentiometric low is characterized by systematic changes in oil and water compositions, with progressively lighter oils and NaCl-rich waters found toward the low's center. Stratigraphic variability controls pooling within the low, with hydrocarbons located on the updip flanks of valley fills which border nonreservoir rocks. In the northwestern Williston basin regional hydrodynamic analysis, combined with standard subsurface approaches, allows operators to discern large new hydrocarbon-bearing trends within and between densely drilled areas characterized by complex structure and stratigraphy.

Putnam, P.E.; Moore, S. (Petrel Robertson Ltd., Calgary, Alberta (Canada)); Ward, G. (Ward Hydrodynamics, Calgary, Alberta (Canada))

1990-05-01T23:59:59.000Z

419

The impact of accretion disk winds on the X-ray spectrum of AGN: Part 2 - XSCORT + Hydrodynamic Simulations  

E-Print Network [OSTI]

abridged: We use XSCORT, together with the hydrodynamic accretion disc wind simulation from Proga & Kallman (2004), to calculate the impact that the accretion disk wind has on the X-ray spectrum from a 1E8 solar mass black hole Active Galactic Nuclei (AGN) accreting at 0.5 L/L_Edd. The properties of the resulting spectra depend on viewing angle and clearly reflect the distinct regions apparent in the original hydrodynamic simulation. Very equatorial lines-of-sight (l.o.s) are dominated by Compton scattering and nearly-neutral absorption. Polar l.o.s result in largely featureless spectra. Finally, l.o.s that intersect the transition region between these extremes have a wide range of absorption features imprinted on the spectrum. Both polar and transition region l.o.s produce spectra that show highly-ionized, blue-shifted, Fe absorption features that are qualitatively similar to features observed in the X-ray spectra of a growing number of AGN. The spectra presented here clearly demonstrate that current simulations of line driven AGN accretion disk winds cannot reproduce the smooth soft X-ray excess. Furthermore, they predict that high accretion rate (L/L_Edd) AGN are likely to be strongly affected by obscuration, in sharp contrast to the clean picture that is generally assumed, based on the observed relation between the opening angle of the molecular torus and AGN luminosity.

N. J. Schurch; C. Done; D. Proga

2008-10-06T23:59:59.000Z

420

Phys. Med. Biol. 45 (2000) N157N165. Printed in the UK PII: S0031-9155(00)14256-3 Hydrodynamic effects on the solute transport across  

E-Print Network [OSTI]

Hydrodynamic effects on the solute transport across endothelial pores and hepatocyte membranes Dumitru Popescu, Liviu Movileanu§¶, Stelian Ion and Maria-Luiza Flonta Membrane Biophysics Laboratory, Institute membranes (Abidor et al 1979, Popescu et al 1991, Popescu and Victor 1991, Weaver and Chizmadzhev 1996

Movileanu, Liviu

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421

Zarillo, G. A., and Brehin, F. G. A. 2007. Hydrodynamic and Morphologic Modeling at Sebastian Inlet, FL. Proceedings Coastal Sediments '07 Conference, ASCE Press, Reston,  

E-Print Network [OSTI]

Inlet, FL. Proceedings Coastal Sediments '07 Conference, ASCE Press, Reston, VA, 1297-1310. HYDRODYNAMIC Modeling System (CMS) to investigate the morphological response to time varying forcing, sediment texture evolution of tidal inlet shoals is an important management tool, since they control sediment budgets. Inlet

US Army Corps of Engineers

422

Hydrodynamics of air entrainment by moving contact lines T. S. Chan, S. Srivastava, A. Marchand, B. Andreotti, L. Biferale et al.  

E-Print Network [OSTI]

Hydrodynamics of air entrainment by moving contact lines T. S. Chan, S. Srivastava, A. Marchand, B. Chan,1 S. Srivastava,2,3 A. Marchand,4 B. Andreotti,4 L. Biferale,5 F. Toschi,2,3,6 and J. H. Snoeijer1

Snoeijer, Jacco

423

Third-generation cylindrical dendrimers based on L-aspargic acid in solutions: hydrodynamic and electrooptical properties  

E-Print Network [OSTI]

Samples of third-generation cylindrical dendrimers with molar masses ranging in the interval 20000...60000 have been studied by the methods of equilibrium and non-equilibrium electrical birefringence, molecular hydrodynamics and optics. It was found that the absolute values of Kerr and flow birefringence constants exceed the values obtained for analogous dendrimers of lower generations. The mechanism of reorientation has proven to be strongly dependent on the physical and chemical properties of the solvent. In chloroform solutions, the studied dendrimers align to the microwave-frequency electric fields according to large-scale mechanism. In dichloroacetic acid solutions, the observed reorientation mechanism is low-scale, which is explained by degradation of intermolecular hydrogen bonds. Terminal dendritic substituents of the macromolecules have experimentally proven to be oriented mainly along the primary polymer chain.

Ilya Martchenko; Nikolai Tsvetkov

2008-09-23T23:59:59.000Z

424

Ion-temperature-gradient sensitivity of the hydrodynamic instability caused by shear in the magnetic-field-aligned plasma flow  

SciTech Connect (OSTI)

The cross-magnetic-field (i.e., perpendicular) profile of ion temperature and the perpendicular profile of the magnetic-field-aligned (parallel) plasma flow are sometimes inhomogeneous for space and laboratory plasma. Instability caused either by a gradient in the ion-temperature profile or by shear in the parallel flow has been discussed extensively in the literature. In this paper, (1) hydrodynamic plasma stability is investigated, (2) real and imaginary frequency are quantified over a range of the shear parameter, the normalized wavenumber, and the ratio of density-gradient and ion-temperature-gradient scale lengths, and (3) the role of inverse Landau damping is illustrated for the case of combined ion-temperature gradient and parallel-flow shear. We find that increasing the ion-temperature gradient reduces the instability threshold for the hydrodynamic parallel-flow shear instability, also known as the parallel Kelvin-Helmholtz instability or the D'Angelo instability. We also find that a kinetic instability arises from the coupled, reinforcing action of both free-energy sources. For the case of comparable electron and ion temperature, we illustrate analytically the transition of the D'Angelo instability to the kinetic instability as (a) the shear parameter, (b) the normalized wavenumber, and (c) the ratio of density-gradient and ion-temperature-gradient scale lengths are varied and we attribute the changes in stability to changes in the amount of inverse ion Landau damping. We show that near a normalized wavenumber k{sub ?}?{sub i} of order unity (i) the real and imaginary values of frequency become comparable and (ii) the imaginary frequency, i.e., the growth rate, peaks.

Mikhailenko, V. V., E-mail: vladimir@pusan.ac.kr [Plasma Research Center, Pusan National University, Busan 609-735 (Korea, Republic of); Mikhailenko, V. S. [School of Physics and Technology, V.N. Karazin Kharkiv National University, 61108 Kharkiv (Ukraine); Faculty of Transportation Systems, Kharkiv National Automobile and Highway University, 61002 Kharkiv (Ukraine); Lee, Hae June, E-mail: haejune@pusan.ac.kr [Department of Electrical Engineering, Pusan National University, Busan 609-735 (Korea, Republic of); Koepke, M. E. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States)

2014-07-15T23:59:59.000Z

425

3D Hydrodynamical Simulations of Surface Convection in Red Giant Stars. Impact on spectral line formation and abundance analysis  

E-Print Network [OSTI]

We investigate the impact of 3D hydrodynamical model atmospheres of red giant stars at different metallicities on the formation of spectral lines of a number of ions and molecules. We carry out realistic 3D simulations of surface convection in red giant stars with varying stellar parameters. We use the simulations as time-dependent hydrodynamical model stellar atmospheres to compute atomic (Li, O, Na, Mg, Ca, Fe) and molecular (CH, NH, OH) spectral lines under the assumption of local thermodynamic equilibrium (LTE). We compare the line strengths computed in 3D with the results of analogous line formation calculations for 1D, hydrostatic, plane-parallel MARCS model atmospheres in order to estimate the impact of 3D models on the derivation of elemental abundances. The temperature and density inhomogeneities and correlated velocities in 3D models, as well as the differences between the 1D and mean 3D structures significantly affect the predicted line strengths. Under the assumption of LTE, the low atmospheric temperatures of very metal-poor 3D model atmospheres cause the lines from neutral species and molecules to appear stronger than in 1D. Therefore, elemental abundances derived from these lines using 3D models are significantly lower than according to 1D analyses. Differences between 3D and 1D abundances of C, N, and O derived from CH, NH, and OH weak low-excitation lines are found to be in the range -0.5 dex to -1.0 dex for the the red giant stars at [Fe/H]=-3 considered here. At this metallicity, large negative corrections (about -0.8 dex) are also found for weak low-excitation Fe I lines. We caution, however, that departures from LTE might be significant for these and other elements and comparable to the effects due to stellar granulation.

Remo Collet; Martin Asplund; Regner Trampedach

2007-03-26T23:59:59.000Z

426

Influence of solids hydrodynamics on local heat transfer from tube banks immersed in a gas fluidized bed  

SciTech Connect (OSTI)

Fluidized bed combustion (FBC) has generated considerable interest as an efficient low-cost and non-polluting means of burning a variety of fuels. Despite the research and developmental efforts focused on FBC for more than three decades, the current state-of-the-art remains at a distance from the point where the combustor/boiler performance can be predicted with confidence. The high heat transfer rates and small internal temperature gradients as perceived from efficient mixing have yet to be fully realized. This is due largely to the multiplicity of variables involved in a fluidized bed combustor and the complexity of its hydrodynamics. Many empirical correlations for predicting heat transfer between a gas fluidized bed and the immersed internals have been proposed. They are based mainly on gross experimental observations with minimal attention to the mechanism of heat transfer due, at least in part, to the lack of systematic data on solids motion. Much useful insight can be obtained from a simultaneous determination of the local heat transfer rates from immersed internal structures and the associated hydrodynamics of the solid particles. Accordingly, in this study, the local mean heat transfer coefficients of horizontal internals simulating tube banks were measured for several locations in the bed along with measurements of the mean solids velocity and density distributions for a range of superficial gas velocities. The experiments were conducted in a 184 mm (7.25 in.) ID air fluidized bed with a horizontal in-line internal rod bundle of 16 mm (0.625 in.) OD with pitch-to-diameter ratio of 4 over a wide range of gas velocities. The results showed that the local heat transfer rates depend strongly on the flow pattern of solids induced by the bubble motion. The data confirmed the expectation that particle convection plays a major role in the mechanisms of heat transfer from immersed internals. 15 refs., 12 figs., 2 tabs.

Moslemian, D.; Chen, M.M.; Chao, B.T.

1986-01-01T23:59:59.000Z

427

Offshore floating vertical axis wind turbines, dynamics modelling state of the art. Part III: Hydrodynamics and coupled modelling approaches  

Science Journals Connector (OSTI)

Abstract The need to further exploit offshore wind resources has pushed offshore wind farms into deeper waters, requiring the use of floating support structures to be economically sustainable. The use of conventional wind turbines may not continue to be the optimal design for floating applications. Therefore it is important to assess other alternative configurations in this context. Vertical axis wind turbines (VAWTs) are one promising configuration, and it is important to first understand the coupled and relatively complex dynamics of floating \\{VAWTs\\} to assess the technical feasibility. As part of this task, a series of articles have been developed to present a comprehensive literature review covering the various areas of engineering expertise required to understand the coupled dynamics involved in floating VAWTs. This third article focuses on approaches to develop an efficient coupled model of dynamics (considering aerodynamics, hydrodynamics, structural and mooring line dynamics, and control dynamics) for floating VAWTs, as well as suitable semi-analytical hydrodynamic models for this type of coupled dynamics models. Emphasis is also placed on utilising computationally efficient models and programming strategies. A comparison of the various forces acting on a floating VAWT with the three main floating support structure (spar, semi-submersible and tension-leg-platform) is also presented to highlight the relative dominant forces and hence importance of model accuracy representing these forces. Lastly a concise summary covering this series of articles is presented to give the reader an overview of this interdisciplinary research area. This article has been written both for researchers new to this research area, outlining underlying theory whilst providing a comprehensive review of the latest work, and for experts in this area, providing a comprehensive list of the relevant references where the details of modelling approaches may be found.

Michael Borg; Maurizio Collu

2014-01-01T23:59:59.000Z

428

Application of a high-power KrF laser for the study of supersonic gas flows and the development of hydrodynamic instabilities in layered media  

SciTech Connect (OSTI)

The design of a miniature laser shock tube for the study of a wide range of hydrodynamic phenomena in liquids at pressures greater than 10 kbar and in supersonic flows with large Mach numbers (greater than 10) is discussed. A substance filling a chamber of quadratic cross section, with a characteristic size of several centimetres, is compressed and accelerated due to local absorption of 100 ns, 100 J KrF laser pulses near the entrance window. It is proposed to focus a laser beam by a prism raster, which provides a uniform intensity distribution over the tube cross section. The system can be used to study the hypersonic flow past objects of complex shape and the development of hydrodynamic instabilities in the case of a passage of a shock wave or a compression wave through the interfaces between different media. (laser applications and other topics in quantum electronics)

Zvorykin, V D; Lebo, I G [P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

2000-06-30T23:59:59.000Z

429

A New Multi-Energy Neutrino Radiation-Hydrodynamics Code in Full General Relativity and Its Application to Gravitational Collapse of Massive Stars  

E-Print Network [OSTI]

We present a new multi-dimensional radiation-hydrodynamics code for massive stellar core-collapse in full general relativity (GR). Employing an M1 analytical closure scheme, we solve spectral neutrino transport of the radiation energy and momentum based on a truncated moment formalism. Regarding neutrino opacities, we take into account the so-called standard set in state-of-the-art simulations, in which inelastic neutrino-electron scattering, thermal neutrino production via pair annihilation and nucleon-nucleon bremsstrahlung are included. In addition to gravitational redshift and Doppler effects, these energy-coupling reactions are incorporated in the moment equations in a covariant form. While the Einstein field equations and the spatial advection terms in the radiation-hydrodynamics equations are evolved explicitly, the source terms due to neutrino-matter interactions and energy shift in the radiation moment equations are integrated implicitly by an iteration method. To verify our code, we conduct several ...

Kuroda, Takami; Kotake, Kei

2015-01-01T23:59:59.000Z

430

A flow integrated DSD hydrodynamics strategy for computing the motion of detonation of insensitive high explosives on an Eulerian grid  

SciTech Connect (OSTI)

The detonation structure in many insensitive high explosives consists of two temporally disparate zones of heat release. In PBX 9502, there is a fast reaction zone ({approx} 25 ns) during which reactants are converted to gaseous products and small carbon clusters, followed by a slower regime ({approx} 250 ns) of carbon coagulation. A hybrid approach for determining the propagation of two-stage heat release detonations has been developed that utilizes a detonation shock dynamics (DSD) based strategy for the fast reaction zone with a direct hydrodynamic simulation of the flow in the slow zone. Unlike a standard DSD/programmed bum formulation, the evolution of the fast zone DSD-like surface is coupled to the flow in the slow reaction zone. We have termed this formulation flow integrated detonation shock dynamics (FIDSD). The purpose of the present paper is to show how the FIDSD formulation can be applied to detonation propagation on an Eulerian grid using an algorithm based on level set interface tracking and a ghost fluid approach.

Short, Mark [Los Alamos National Laboratory; Aslam, Tariq D [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

431

Hydrodynamical description of 200A GeV/c S+Au collisions: Hadron and electromagnetic spectra  

Science Journals Connector (OSTI)

We study relativistic S+Au collisions at 200A GeV/c using a hydrodynamical approach. We test various equations of state (EOSs), which are used to describe the strongly interacting matter at densities attainable in the CERN-SPS heavy ion experiments. For each EOS, suitable initial conditions can be determined to reproduce the experimental hadron spectra; this emphasizes the ambiguity between the initial conditions and the EOS in such an approach. Simultaneously, we calculate the resulting thermal photon and dielectron spectra, and compare with experiments. If one allows the excitation of resonance states with increasing temperature, the electromagnetic signals from scenarios with and without phase transition are very similar and are not resolvable within the current experimental resolution. Only EOSs with a few degrees of freedom up to very high temperatures can be ruled out presently. We deduce an upper bound of about 250 MeV for the initial temperature from the single photon spectra of WA80. With regard to the CERES dilepton data, none of the EOSs considered, in conjunction with the standard leading order dilepton rates, succeed in reproducing the observed excess of dileptons below the ? peak. Our work, however, suggests that an improved measurement of the photon and dilepton spectra has the potential to strongly constrain the EOS.

Josef Sollfrank; Pasi Huovinen; Markku Kataja; P. V. Ruuskanen; Madappa Prakash; Raju Venugopalan

1997-01-01T23:59:59.000Z

432

Hydrodynamic modeling of the deconfinement phase transition in heavy-ion collisions in the NICAFAIR energy domain  

Science Journals Connector (OSTI)

We use (3 + 1) dimensional ideal hydrodynamics to describe the space-time evolution of strongly interacting matter created in Au + Au and Pb + Pb collisions. The model is applied for the domain of bombarding energies 1160 GeV/nucleon which includes future NICA (Dubna) and FAIR (Darmstadt) experiments. Two equations of state are used, the first one corresponding to resonance hadron gas and the second one including the deconfinement phase transition. The initial state is represented by two Lorentz-boosted nuclei. Dynamic trajectories of matter in the central box of the system are analyzed. They can be well represented by a fast shock-wave compression followed by a relatively slow isentropic expansion. The parameters of collective flows and hadronic spectra are calculated under assumption of the isochronous freeze-out. It is shown that the deconfinement phase transition leads to broadening of proton rapidity distributions, increase of elliptic flows, and formation of the directed antiflow in the central rapidity region. These effects are most pronounced at bombarding energies around 10GeV/nucleon, when the system spends the longest time in the mixed phase. From the comparison with three-fluid calculations we conclude that the transparency effects are not so important in central collisions at NICAFAIR energies (below 30 GeV/nucleon).

A. V. Merdeev; L. M. Satarov; I. N. Mishustin

2011-07-29T23:59:59.000Z

433

CFD analysis of bubble hydrodynamics in a fuel reactor for a hydrogen-fueled chemical looping combustion system  

Science Journals Connector (OSTI)

Abstract This study investigates the temporal development of bubble hydrodynamics in the fuel reactor of a hydrogen-fueled chemical looping combustion (CLC) system by using a computational model. The model also investigates the molar fraction of products in gas and solid phases. The study assists in developing a better understanding of the CLC process, which has many advantages such as being a potentially promising candidate for an efficient carbon dioxide capture technology. The study employs the kinetic theory of granular flow. The reactive fluid dynamic system of the fuel reactor is customized by incorporating the kinetics of an oxygen carrier reduction into a commercial computational fluid dynamics (CFD) code. An Eulerian multiphase treatment is used to describe the continuum two-fluid model for both gas and solid phases. CaSO4 and H2 are used as an oxygen carrier and a fuel, respectively. The computational results are validated with the experimental and numerical results available in the open literature. The CFD simulations are found to capture the features of the bubble formation, rise and burst in unsteady and quasi-steady states very well. The results show a significant increase in the conversion rate with higher dense bed height, lower bed width, higher free board height and smaller oxygen carrier particles which upsurge an overall performance of the CLC plant.

Atal Bihari Harichandan; Tariq Shamim

2014-01-01T23:59:59.000Z

434

Electro-hydrodynamics and kinetic modelling of polluted air flow activated by multi-tip-to-plane corona discharge  

SciTech Connect (OSTI)

The present paper is devoted to the 2D simulation of an Atmospheric Corona Discharge Reactor (ACDR) involving 10 pins powered by a DC high voltage and positioned 7 mm above a grounded metallic plane. The corona reactor is periodically crossed by thin mono filamentary streamers with a natural repetition frequency of some tens of kHz. The simulation involves the electro-dynamic, chemical kinetic, and neutral gas hydrodynamic phenomena that influence the kinetics of the chemical species transformation. Each discharge stage (including the primary and the secondary streamers development and the resulting thermal shock) lasts about one hundred nanoseconds while the post-discharge stages occurring between two successive discharge phases last one hundred microseconds. The ACDR is crossed by a lateral air flow including 400 ppm of NO. During the considered time scale of 10 ms, one hundred discharge/post-discharge cycles are simulated. The simulation involves the radical formation and thermal exchange between the discharges and the background gas. The results show how the successive discharges activate the flow gas and how the induced turbulence phenomena affect the redistribution of the thermal energy and the chemical kinetics inside the ACDR.

Meziane, M.; Eichwald, O.; Ducasse, O.; Marchal, F. [Universite de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion d'Energie), Toulouse Cedex 9 F-31062 (France); Sarrette, J. P.; Yousfi, M. [Universite de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion d'Energie), Toulouse Cedex 9 F-31062 (France); CNRS, LAPLACE, Toulouse F-31062 (France)

2013-04-21T23:59:59.000Z

435

Numerical study of heavy-ion stopping in foam targets with one-dimensional subcell-scale hydrodynamic motions  

Science Journals Connector (OSTI)

Abstract Heavy-ion stopping in foam targets with subcell-scale hydro motions was numerically investigated in relation to ion-driven warm dense matter experiments. To simulate porous foam targets, we employed a simple 1D periodic multilayer model consisting of thin solid slabs and gaps between them. The averaged pore diameter and cell-wall thickness of the foam were represented by the gap width between the slabs and the slab thickness, respectively. The density- and temperature-dependent projectile stopping cross-sections were evaluated using a binary encounter model taking into account the electronic state of target atoms during heating and expansion. We employed a combination of 11Na projectiles and subrange 13Al foam targets with ?=0.05?solid. The hydrodynamic motion of the target was calculated with a 1D code. During homogenization, hot dense spots appeared at the original gap positions, owing to stagnation of the jets. As a result, even after the pores were filled with blow-off materials, the initial inhomogeneity was not completely smeared out, and the total energy loss was still not equal to that in the homogeneous equivalent, especially for large pore sizes.

Y. Oguri; K. Kondo; J. Hasegawa

2014-01-01T23:59:59.000Z

436

A multigroup diffusion solver using pseudo transient continuation for a radiation-hydrodynamic code with patch-based AMR  

E-Print Network [OSTI]

We present a scheme to solve the nonlinear multigroup radiation diffusion (MGD) equations. The method is incorporated into a massively parallel, multidimensional, Eulerian radiation-hydrodynamic code with adaptive mesh refinement (AMR). The patch-based AMR algorithm refines in both space and time creating a hierarchy of levels, coarsest to finest. The physics modules are time-advanced using operator splitting. On each level, separate level-solve packages advance the modules. Our multigroup level-solve adapts an implicit procedure which leads to a two-step iterative scheme that alternates between elliptic solves for each group with intra-cell group coupling. For robustness, we introduce pseudo transient continuation (PTC). We analyze the magnitude of the PTC parameter to ensure positivity of the resulting linear system, diagonal dominance and convergence of the two-step scheme. For AMR, a level defines a subdomain for refinement. For diffusive processes such as MGD, the refined level uses Dirichet boundary data at the coarse-fine interface and the data is derived from the coarse level solution. After advancing on the fine level, an additional procedure, the sync-solve (SS), is required in order to enforce conservation. The MGD SS reduces to an elliptic solve on a combined grid for a system of G equations, where G is the number of groups. We adapt the partial temperature scheme for the SS; hence, we reuse the infrastructure developed for scalar equations. Results are presented. (Abridged)

A. I. Shestakov; S. S. R. Offner

2007-10-24T23:59:59.000Z

437

An axisymmetric hydrodynamical model for the torus wind in AGN. II: X-ray excited funnel flow  

E-Print Network [OSTI]

We have calculated a series of models of outflows from the obscuring torus in active galactic nuclei (AGN). Our modeling assumes that the inner face of a rotationally supported torus is illuminated and heated by the intense X-rays from the inner accretion disk and black hole. As a result of such heating a strong biconical outflow is observed in our simulations. We calculate 3-dimensional hydrodynamical models, assuming axial symmetry, and including the effects of X-ray heating, ionization, and radiation pressure. We discuss the behavior of a large family of these models, their velocity fields, mass fluxes and temperature, as functions of the torus properties and X-ray flux. Synthetic warm absorber spectra are calculated, assuming pure absorption, for sample models at various inclination angles and observing times. We show that these models have mass fluxes and flow speeds which are comparable to those which have been inferred from observations of Seyfert 1 warm absorbers, and that they can produce rich absorption line spectra.

A. Dorodnitsyn; T. Kallman; D. Proga

2008-06-23T23:59:59.000Z

438

An axisymmetric hydrodynamical model for the torus wind in AGN. II: X-ray excited funnel flow  

E-Print Network [OSTI]

We have calculated a series of models of outflows from the obscuring torus in active galactic nuclei (AGN). Our modeling assumes that the inner face of a rotationally supported torus is illuminated and heated by the intense X-rays from the inner accretion disk and black hole. As a result of such heating a strong biconical outflow is observed in our simulations. We calculate 3-dimensional hydrodynamical models, assuming axial symmetry, and including the effects of X-ray heating, ionization, and radiation pressure. We discuss the behavior of a large family of these models, their velocity fields, mass fluxes and temperature, as functions of the torus properties and X-ray flux. Synthetic warm absorber spectra are calculated, assuming pure absorption, for sample models at various inclination angles and observing times. We show that these models have mass fluxes and flow speeds which are comparable to those which have been inferred from observations of Seyfert 1 warm absorbers, and that they can produce rich absorp...

Dorodnitsyn, A; Proga, D

2008-01-01T23:59:59.000Z

439

The energy conservation law in hydrodynamics vs the pseudo-law of alternative energy. Comment on 'Alternative energy vs pseudoscience' and the papers cited and not cited therein  

E-Print Network [OSTI]

A series of papers in the ISJAEE Journal on 'dam-free hydroelectric power station' concluded by paper: Zotyev, D. B., Alternative energy vs pseudo-science, ISJAEE. 2013. 8(130). P.131-136, is reviewed and commented. A comparison with the generally accepted energy conservation law in hydrodynamics reveals a disappointingly low scientific level of the reviewed papers (both pro- and contra- the dam-free concept), not excluding the published peer-reviewer reports. In the present version we emphasize that the ISJAEE journal published several papers, which neglect and reject the basic physical concepts, such as the Bernoulli integral, the energy conservation law in hydrodynamics, the wave function of photon and some others, with all these rejected concepts being far beyond the scientific scope of the journal. Some readers will be more concerned about the energy equation in hydrodynamics, in its theoretical form or in the Bernoulli integral form as being more traditional in technical hydromechanics. Some readers will be shocked with the statement that a photon does not possess the wave function. Overall, in this way or in that way, all readers will hardly stay unsurprised.

Igor Sokolov

2014-03-20T23:59:59.000Z

440

UNIVERSITY POLICE DEPARTMENT San Diego State University  

E-Print Network [OSTI]

unnecessary travel to Michoacán and Tamaulipas, to parts of Chihuahua, Sinaloa, Durango, and Coahuila, (see murdered in Ciudad Juarez, in the state of Chihuahua, across from El Paso, Texas, than in any other city

Ponce, V. Miguel

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

University of California, San Diego Humanities 5  

E-Print Network [OSTI]

(Harcourt) · TS Eliot, Selected Poems (Harcourt) · Albert Camus, The Plague (Vintage) · Malcolm X w/ Alex) George Orwell, The Road to Wigan Pier (Ch 1, 2, 5, 8-13) 5/9-14 Ethics after the War · (B) Albert Camus

Russell, Lynn

442

San Diego Gas & Electric Video (Text Version)  

Broader source: Energy.gov [DOE]

Narrator: Having a workplace charging stations is a great way to encourage employees to switch to electric vehicles but there are a few things you may want to consider. There are several companies...

443

Syracuse University San Diego Mesa College  

E-Print Network [OSTI]

, 200, 200L, 201, 201L, 231, 231L, 233, 233L, 251(w/lab); GEOG 101,101L; GEOL 100, 101(lab), 104; MATH

Segraves, Kari A.

444

Syracuse University San Diego Mesa College  

E-Print Network [OSTI]

, 231L, 233, 233L, 251(w/lab); GEOG 101,101L; GEOL 100, 101(lab), 104; MATH 116, 119, 121, 122, 141, 150

Segraves, Kari A.

445

Syracuse University San Diego Mesa College  

E-Print Network [OSTI]

, 251(w/lab); GEOG 101,101L; GEOL 100, 101(lab), 104; MATH 116, 119, 121, 122, 141, 150, 151, 245, 252

Segraves, Kari A.

446

Syracuse University San Diego Mesa College  

E-Print Network [OSTI]

L, 111, 111L, 130, 130L, 152, 152L, 200, 200L, 201, 201L, 231, 231L, 233, 233L, 251(w/lab); GEOG 101

Segraves, Kari A.

447

Syracuse University San Diego Mesa College  

E-Print Network [OSTI]

, 201L, 231, 231L, 233, 233L, 251(w/lab); GEOG 101,101L; GEOL 100, 101(lab), 104; MATH 116, 119, 121

Segraves, Kari A.

448

Syracuse University San Diego Mesa College  

E-Print Network [OSTI]

/lab); CHEM 100, 100L, 111, 111L, 130, 130L, 152, 152L, 200, 200L, 201, 201L, 231, 231L, 233, 233L, 251(w

Segraves, Kari A.

449

EMERGENCY PROCEDURES SAN DIEGO STATE UNIVERSITY  

E-Print Network [OSTI]

is in danger call SDSU Police, dial 9-1-1. Move away from the site of the hazard to a safe location. Alert is blocked. Secure any hazardous materials or equipment before leaving. Take personal belongings (keys light switches. EMERGENCY NOTIFICATION Official emergency information will be provided as soon

Ponce, V. Miguel

450

Hydrodynamic simulations of long-scale-length two-plasmon-decay experiments at the Omega Laser Facility  

SciTech Connect (OSTI)

Direct-drive-ignition designs with plastic CH ablators create plasmas of long density scale lengths (L{sub n} {>=} 500 {mu}m) at the quarter-critical density (N{sub qc}) region of the driving laser. The two-plasmon-decay (TPD) instability can exceed its threshold in such long-scale-length plasmas (LSPs). To investigate the scaling of TPD-induced hot electrons to laser intensity and plasma conditions, a series of planar experiments have been conducted at the Omega Laser Facility with 2-ns square pulses at the maximum laser energies available on OMEGA and OMEGA EP. Radiation-hydrodynamic simulations have been performed for these LSP experiments using the two-dimensional hydrocode draco. The simulated hydrodynamic evolution of such long-scale-length plasmas has been validated with the time-resolved full-aperture backscattering and Thomson-scattering measurements. draco simulations for CH ablator indicate that (1) ignition-relevant long-scale-length plasmas of L{sub n} approaching {approx}400 {mu}m have been created; (2) the density scale length at N{sub qc} scales as L{sub n}({mu}m) Asymptotically-Equal-To (R{sub DPP} Multiplication-Sign I{sup 1/4}/2); and (3) the electron temperature T{sub e} at N{sub qc} scales as T{sub e}(keV) Asymptotically-Equal-To 0.95 Multiplication-Sign {radical}(I), with the incident intensity (I) measured in 10{sup 14} W/cm{sup 2} for plasmas created on both OMEGA and OMEGA EP configurations with different-sized (R{sub DPP}) distributed phase plates. These intensity scalings are in good agreement with the self-similar model predictions. The measured conversion fraction of laser energy into hot electrons f{sub hot} is found to have a similar behavior for both configurations: a rapid growth [f{sub hot} Asymptotically-Equal-To f{sub c} Multiplication-Sign (G{sub c}/4){sup 6} for G{sub c} < 4] followed by a saturation of the form, f{sub hot} Asymptotically-Equal-To f{sub c} Multiplication-Sign (G{sub c}/4){sup 1.2} for G{sub c} {>=} 4, with the common wave gain is defined as G{sub c}=3 Multiplication-Sign 10{sup -2} Multiplication-Sign I{sub qc}L{sub n}{lambda}{sub 0}/T{sub e}, where the laser intensity contributing to common-wave gain I{sub qc}, L{sub n}, T{sub e} at N{sub qc}, and the laser wavelength {lambda}{sub 0} are, respectively, measured in [10{sup 14} W/cm{sup 2}], [{mu}m], [keV], and [{mu}m]. The saturation level f{sub c} is observed to be f{sub c} Asymptotically-Equal-To 10{sup -2} at around G{sub c} Asymptotically-Equal-To 4. The hot-electron temperature scales roughly linear with G{sub c}. Furthermore, to mitigate TPD instability in long-scale-length plasmas, different ablator materials such as saran and aluminum have been investigated on OMEGA EP. Hot-electron generation has been reduced by a factor of 3-10 for saran and aluminum plasmas, compared to the CH case at the same incident laser intensity. draco simulations suggest that saran might be a better ablator for direct-drive-ignition designs as it balances TPD mitigation with an acceptable hydro-efficiency.

Hu, S. X.; Michel, D. T.; Edgell, D. H.; Froula, D. H.; Follett, R. K.; Goncharov, V. N.; Myatt, J. F.; Skupsky, S.; Yaakobi, B. [Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States)

2013-03-15T23:59:59.000Z

451

An arbitrary LagrangianEulerian approach to solving the quantum hydrodynamic equations of motion: Equidistribution with smart springs  

Science Journals Connector (OSTI)

Recently the quantum trajectory method (QTM) has been utilized in solving several quantum mechanical wave packet scattering problems including barrier transmission and electronic nonadiabatic dynamics. By propagating the real-valued action and amplitude functions in the Lagrangian frame only a fraction of the grid points needed for Eulerian fixed-grid methods are used while still obtaining accurate solutions. Difficulties arise however near wave functionnodes and in regions of sharp oscillatory features and because of this many quantum mechanical problems have not yet been amenable to solution with the QTM. This study proposes a hybrid of both the Lagrangian and Eulerian techniques in what is termed the arbitrary LagrangianEulerian method (ALE). In the ALE method an additional equation of motion governing the momentum of the grid points is coupled into the quantum hydrodynamicequations. These new quasi- Bohmian trajectories can be dynamically adapted to the emergent features of the time evolving hydrodynamic fields and are non-Lagrangian. In this study it is shown that the ALE method applied to an uphill ramp potential that was previously unsolvable by the current Lagrangian QTM not only yields stable transmission probabilities with accuracies comparable to that of a high resolution Eulerian method but does so with a small number of grid points and for extremely long propagation times. To determine the grid point positions at each new time an equidistribution method is used that is constructed similar to the stiffness matrix of a classical spring system in equilibrium. Each smart spring is dependent on a local function M(x) called the monitor function which can sense gradients or curvatures of the fields surrounding its position. To constrain grid points from having zero separation and possible overlap a new system of equations is derived that includes a minimum separation parameter which prevents this from occurring.

Corey J. Trahan; Robert E. Wyatt

2003-01-01T23:59:59.000Z

452

Two-Dimensional Hydrodynamic Core-Collapse Supernova Simulations with Spectral Neutrino Transport II. Models for Different Progenitor Stars  

E-Print Network [OSTI]

1D and 2D supernova simulations for stars between 11 and 25 solar masses are presented, making use of the Prometheus/Vertex neutrino-hydrodynamics code, which employs a full spectral treatment of the neutrino transport. Multi-dimensional transport aspects are treated by the ``ray-by-ray plus'' approximation described in Paper I. Our set of models includes a 2D calculation for a 15 solar mass star whose iron core is assumed to rotate rigidly with an angular frequency of 0.5 rad/s before collapse. No important differences were found depending on whether random seed perturbations for triggering convection are included already during core collapse, or whether they are imposed on a 1D collapse model shortly after bounce. Convection below the neutrinosphere sets in about 40 ms p.b. at a density above 10**12 g/cm^3 in all 2D models, and encompasses a layer of growing mass as time goes on. It leads to a more extended proto-neutron star structure with accelerated lepton number and energy loss and significantly higher muon and tau neutrino luminosities, but reduced mean energies of the radiated neutrinos, at times later than ~100 ms p.b. In case of an 11.2 solar mass star we find that low (l = 1,2) convective modes cause a probably rather weak explosion by the convectively supported neutrino-heating mechanism after ~150 ms p.b. when the 2D simulation is performed with a full 180 degree grid, whereas the same simulation with 90 degree wedge fails to explode like all other models. This sensitivity demonstrates the proximity of our 2D models to the borderline between success and failure, and stresses the need of simulations in 3D, ultimately without the axis singularity of a polar grid. (abridged)

R. Buras; H. -Th. Janka; M. Rampp; K. Kifonidis

2005-12-07T23:59:59.000Z

453

Fast-ignition transport studies: Realistic electron source, integrated particle-in-cell and hydrodynamic modeling, imposed magnetic fields  

SciTech Connect (OSTI)

Transport modeling of idealized, cone-guided fast ignition targets indicates the severe challenge posed by fast-electron source divergence. The hybrid particle-in-cell (PIC) code Zuma is run in tandem with the radiation-hydrodynamics code Hydra to model fast-electron propagation, fuel heating, and thermonuclear burn. The fast electron source is based on a 3D explicit-PIC laser-plasma simulation with the PSC code. This shows a quasi two-temperature energy spectrum and a divergent angle spectrum (average velocity-space polar angle of 52 Degree-Sign ). Transport simulations with the PIC-based divergence do not ignite for >1 MJ of fast-electron energy, for a modest (70 {mu}m) standoff distance from fast-electron injection to the dense fuel. However, artificially collimating the source gives an ignition energy of 132 kJ. To mitigate the divergence, we consider imposed axial magnetic fields. Uniform fields {approx}50 MG are sufficient to recover the artificially collimated ignition energy. Experiments at the Omega laser facility have generated fields of this magnitude by imploding a capsule in seed fields of 50-100 kG. Such imploded fields will likely be more compressed in the transport region than in the laser absorption region. When fast electrons encounter increasing field strength, magnetic mirroring can reflect a substantial fraction of them and reduce coupling to the fuel. A hollow magnetic pipe, which peaks at a finite radius, is presented as one field configuration which circumvents mirroring.

Strozzi, D. J.; Tabak, M.; Larson, D. J.; Divol, L.; Kemp, A. J.; Bellei, C.; Marinak, M. M.; Key, M. H. [Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States)

2012-07-15T23:59:59.000Z

454

THREE-DIMENSIONAL HYDRODYNAMIC SIMULATIONS OF MULTIPHASE GALACTIC DISKS WITH STAR FORMATION FEEDBACK. I. REGULATION OF STAR FORMATION RATES  

SciTech Connect (OSTI)

The energy and momentum feedback from young stars has a profound impact on the interstellar medium (ISM), including heating and driving turbulence in the neutral gas that fuels future star formation. Recent theory has argued that this leads to a quasi-equilibrium self-regulated state, and for outer atomic-dominated disks results in the surface density of star formation ?{sub SFR} varying approximately linearly with the weight of the ISM (or midplane turbulent + thermal pressure). We use three-dimensional numerical hydrodynamic simulations to test the theoretical predictions for thermal, turbulent, and vertical dynamical equilibrium, and the implied functional dependence of ?{sub SFR} on local disk properties. Our models demonstrate that all equilibria are established rapidly, and that the expected proportionalities between mean thermal and turbulent pressures and ?{sub SFR} apply. For outer disk regions, this results in ?{sub SFR}???(?{sub sd}), where ? is the total gas surface density and ?{sub sd} is the midplane density of the stellar disk (plus dark matter). This scaling law arises because ?{sub sd} sets the vertical dynamical time in our models (and outer disk regions generally). The coefficient in the star formation law varies inversely with the specific energy and momentum yield from massive stars. We find proportions of warm and cold atomic gas, turbulent-to-thermal pressure, and mean velocity dispersions that are consistent with solar-neighborhood and other outer disk observations. This study confirms the conclusions of a previous set of simulations, which incorporated the same physics treatment but was restricted to radial-vertical slices through the ISM.

Kim, Chang-Goo [Department of Physics and Astronomy, University of Western Ontario, London, Ontario N6A 3K7 (Canada); Ostriker, Eve C. [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States); Kim, Woong-Tae, E-mail: ckim256@uwo.ca, E-mail: eco@astro.princeton.edu, E-mail: wkim@astro.snu.ac.kr [Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of)

2013-10-10T23:59:59.000Z

455

Comparison of Diffuse Shortwave Irradiance Measurements  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diffuse Shortwave Diffuse Shortwave Irradiance Measurements J. J. Michalsky and J. Schlemmer Atmospheric Sciences Research Center State University of New York Albany, New York B. C. Bush, S. Leitner, D. Marsden, and F. P. J. Valero Scripps Institution of Oceanography University of California, San Diego La Jolla, California R. Dolce and A. Los Kipp & Zonen, Inc. Bohemia, New York and Delft The Netherlands E. G. Dutton Climate Monitoring and Diagnostics Laboratory National Oceanic and Atmospheric Administration Boulder, Colorado M. P. Haeffelin Virginia Polytechnic Institute and State University Blackburg, Virginia G. Major Budapest University of Economic Sciences and Public Administration Budapest, Hungry J. Hickey The Eppley Laboratory, Inc. Newport, Rhode Island

456

On the Geochemistry of Venice Lagoon Sediments. Scripps Institution of Oceanography SEDiment Research Program SIOSED. A Background Report  

E-Print Network [OSTI]

profiles of wet marine sediments. Geochemistry, Geophysics,2006). New techniques in sediment core analysis. Geol.Soc.1997). Metal fluxes to the sediments of the northern Venice

2011-01-01T23:59:59.000Z

457

Luminescence from hydrodynamic cavitation  

Science Journals Connector (OSTI)

...vibrations, and may affect the efficiency of a hydraulic system, such as a pump or a turbine. The level of understanding...200-650nm response, quantum efficiency 20% at 400nm, rise time...300-820nm, peak quantum efficiency 20% at 420nm). The...

2011-01-01T23:59:59.000Z

458

Lattice Boltzmann equation hydrodynamics  

Science Journals Connector (OSTI)

By inserting position and time dependent source or forcing terms into the microscopic evolution equation of a lattice Boltzmann fluid and treating the generalized scheme within the usual Chapman-Enskog methodology, we show that the emergent dynamics of the lattice fluid may be usefully transformed. Our method of adjustment is demonstrated by implementing the cylindrical polar coordinate form of the continuity and momentum equations on a rectangular lattice and generating results for pipe flow. With straightforward systematic adjustment of the simulation, our approach produces results in excellent agreement with theory.

I. Halliday; L. A. Hammond; C. M. Care; K. Good; A. Stevens

2001-06-28T23:59:59.000Z

459

Hydrodynamic ultrasonic probe  

DOE Patents [OSTI]

An improved probe for in-service ultrasonic inspection of long lengths of a workpiece, such as small diameter tubing from the interior. The improved probe utilizes a conventional transducer or transducers configured to inspect the tubing for flaws and/or wall thickness variations. The probe utilizes a hydraulic technique, in place of the conventional mechanical guides or bushings, which allows the probe to move rectilinearly or rotationally while preventing cocking thereof in the tube and provides damping vibration of the probe. The probe thus has lower friction and higher inspection speed than presently known probes.

Day, Robert A. (Livermore, CA); Conti, Armond E. (San Jose, CA)

1980-01-01T23:59:59.000Z

460

Thymidylate Synthase Complementing Protein  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

3 3 Irimpan I. Mathews1, Ashley M. Deacon1,2, Jaume M. Canaves2,3, Daniel McMullan2,4, Scott A. Lesley2,4, Sanjay Agarwalla5, and Peter Kuhn1,2,6 1Stanford Synchrotron Radiation Laboratory, Stanford, CA, 2The Joint Center for Structural Genomics, CA, 3San Diego Supercomputer Center, La Jolla, CA, 4The Genomics Institute of Novartis Research Foundation, San Diego, CA, 5University of California, San Francisco, CA, 6The Scripps Research Institute, La Jolla, CA The huge number of complete genome sequences are fueling large-scale bioinformatics, and structural and functional proteomics efforts aimed at accelerating the identification and characterization of new drug targets, a critical pre-requisite for the development of new therapeutics. The JCSG structural genomics effort is pursuing a full proteome analysis of Thermotoga maritima, and follow-on studies have already resulted in the identification of an antibacterial drug target.

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

1  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Scale Dependence of Solar Radiative Heating Rates in Scale Dependence of Solar Radiative Heating Rates in Tropical-Convective Cloud Systems with Implications to General Circulation Models A. M. Vogelmann, V. Ramanathan, and I. A. Podgorny Center for Atmospheric Sciences & Center for Clouds, Chemistry and Climate Scripps Institution of Oceanography University of California, San Diego San Diego, California Introduction Climate models must explicitly resolve or else parameterize the physical processes that govern the climate system. Towards this goal, we should guide our model development by an understanding of the spatial scales upon which these physical processes operate. This scale-dependent information enables distinguishing those processes that are resolvable by the horizontal resolution of the climate model's

462

X:\ARM_19~1\PGS29-47.WPD  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

p p cld 1 p cld Broken-Cloud Enhancement of Solar Radiation Absorption R. N. Byrne R.C.J. Somerville Science Applications International Corporation Climate Research Division, Scripps Institution of San Diego, California Oceanography University of California, San Diego La Jolla, California B. Subasilar School of Physical Sciences Curtain University of Technology Perth, WA 6001, Australia Abstract Two papers recently published in Science have shown that there is more absorption of solar radiation than estimated by current atmospheric general circulation models (GCMs) and that the discrepancy is associated with cloudy scenes. We have devised a simple model which explains this as an artifact of stochastic radiative transport. We first give a heuristic description, unencumbered by

463

shields-98.pdf  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

7 7 The Whole Sky Imager - A Year of Progress J. E. Shields and M. E. Karr Marine Physical Laboratory Scripps Institution of Oceanography University of California, San Diego San Diego, California T. P. Tooman Sandia National Laboratories Livermore, California D. H. Sowle and S. T. Moore Mission Research Corporation Santa Barbara, California Abstract Much progress has been made this last year in realizing the potential of the whole sky imager (WSI). Two imagers are deployed [at the Southern Great Plains (SGP) site and the Surface Heat Budget of the Arctic Ocean (SHEBA)], two are being prepared for deployment in the Tropical Western Pacific (TWP), and more are in production. Data products now include daytime thick cloud fraction and calibrated radiance. Night cloud fraction and daytime thin cloud

464

1  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aerosol Forcing from the Indian Ocean Experiment Aerosol Forcing from the Indian Ocean Experiment and the ARM-SGP A. M. Vogelmann, V. Ramanathan, and S. K. Satheesh Center for Atmospheric Sciences & Center for Clouds, Chemistry and Climate Scripps Institution of Oceanography University of California, San Diego San Diego, California Introduction The tropical Indian Ocean provides an ideal and unique natural laboratory to observe and understand the role of anthropogenic aerosols in climate forcing. This region is probably the only place in the world where an intense source of anthropogenic aerosols, trace gases, and their reaction products (e.g., sulfates, ozone) from the northern hemisphere is directly connected to the pristine air of the southern hemisphere by a cross-equatorial monsoonal flow into the intertropical convergence zone (ITCZ).

465

Lane-DE  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Stochastic Radiative Transfer Model Using Stochastic Radiative Transfer Model Using Ground-Based Measurements D. E. Lane, R. C. J. Somerville, and S. F. Iacobellis Scripps Institution of Oceanography University of California, San Diego San Diego, California Introduction Scientists have long been aware there is a need for a stochastic description of radiative transfer through media with statistically distributed parameters (Stephens 1984; Ramanathan et al. 1989; Stephens et al. 1991). This study used a shortwave stochastic band model to investigate radiative transfer through a broken cloud field for several days when low-lying fair-weather cumulus and cumulus fractus clouds were present at the Atmospheric Radiation Measurement (ARM) Program's Southern Great Plains (SGP) site. The stochastic model distributes clouds in a clear sky according to the statistics of the cloud

466

CX-004345: Categorical Exclusion Determination | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

45: Categorical Exclusion Determination 45: Categorical Exclusion Determination CX-004345: Categorical Exclusion Determination Fire Safe and Energy Independent Communities CX(s) Applied: A9, B5.1 Date: 10/26/2010 Location(s): San Diego, California Office(s): Energy Efficiency and Renewable Energy, Golden Field Office The City of San Diego proposes to use federal funds to install a roof mounted photovoltaic system on the Scripps Ranch Recreation Center. This National Environmental Policy Act (NEPA) determination is a follow-on from the original determination (GF0-10-096) which required the recipient to submit site specific information for proposed solar installations. This project will include the installation of a 30 kilowatt roof mounted photovoltaic system, installation of a battery storage system within an

467

An experimental study of the hydrodynamics and cluster formation in a circulating fluidized-bed riser. Semi-annual report, July 1, 1992--December 31, 1992  

SciTech Connect (OSTI)

A novel gas-solid flow measuring technique is being developed and tested for studying the hydrodynamics inside the riser of a Circulating Fluidized Bed (CFB). First of the two aims of the overall program, namely, design, development and testing of the technique to characterize the particle and gas velocities in two-phase flows was accomplished in the past year. The second objective, that of making detailed measurements of gas and solid phases in the rises of a cold CFB model to investigate the phenomena of clusters and streamers for different bed operating parameters is being accomplished in the current year. The differential pressure fluctuations were in order to study the solids cluster formation. Of the several factors which lead to differential pressure fluctuations, the solids cluster formation in CFB riser is by far the most important of all. Simultaneously, theoretical formulation of the two-phase flow in the CFB riser was initiated. The concept of entropy maximization is being applied to explain the hydrodynamics inside the riser. The results from this study will present a unique detailed description of the complex gas-solid behavior in the CFB riser.

Gautam, M.; Jurewicz, J.T.; Johnson, E.K.; Heping, Y.

1993-01-01T23:59:59.000Z

468

A new scheme of causal viscous hydrodynamics for relativistic heavy-ion collisions: A Riemann solver for quarkgluon plasma  

SciTech Connect (OSTI)

In this article, we present a state-of-the-art algorithm for solving the relativistic viscous hydrodynamics equation with the QCD equation of state. The numerical method is based on the second-order Godunov method and has less numerical dissipation, which is crucial in describing of quarkgluon plasma in high-energy heavy-ion collisions. We apply the algorithm to several numerical test problems such as sound wave propagation, shock tube and blast wave problems. In sound wave propagation, the intrinsic numerical viscosity is measured and its explicit expression is shown, which is the second-order of spatial resolution both in the presence and absence of physical viscosity. The expression of the numerical viscosity can be used to determine the maximum cell size in order to accurately measure the effect of physical viscosity in the numerical simulation.

Akamatsu, Yukinao, E-mail: akamatsu@kmi.nagoya-u.ac.jp [KobayashiMaskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602 (Japan)] [KobayashiMaskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602 (Japan); Inutsuka, Shu-ichiro [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan)] [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Nonaka, Chiho [KobayashiMaskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602 (Japan) [KobayashiMaskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602 (Japan); Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Takamoto, Makoto [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan) [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Max-Planck-Institut fr Kernphysik, Postfach 103980, 69029 Heidelberg (Germany)

2014-01-01T23:59:59.000Z

469

Probing the equation of state in Au+Au at 11 GeV/nucleon with (3+1)-dimensional hydrodynamics  

SciTech Connect (OSTI)

The effect of (i) the phase transition between a quark gluon plasma (QGP) and a hadron gas and (ii) the number of resonance degrees of freedom in the hadronic phase on the single inclusive distributions of 16 different types of produced hadrons for Au+Au collisions at the Brookhaven Alternating Gradient Synchroton (AGS) energies is studied. We have used an exact numerical solution of the relativistic hydrodynamical equations {ital without free parameters} which, because of its (3+1)-dimensional character, constitutes a considerable improvement over the classical Landau solution. We assume chemical equilibration and we use two different equations of state (EOS): one describing a phase transition from QGP to the hadronic phase and two versions of a purely hadronic EOS; we find that the first one gives an overall better description of the Au+Au experimental data at AGS energies. We reproduce and analyze measured meson and proton spectra and also make predictions for antiprotons, deltas, antideltas, and hyperons. The low m{sub t} enhancement in {pi}{sup {minus}} spectra is explained by baryon number conservation and strangeness equilibration. The sensitivity of various production channels to the EOS is analyzed. {copyright} {ital 1997} {ital The American Physical Society}

Arbex, N.; Ornik, U.; Pluemer, M.; Weiner, R.M. [Physics Department, University of Marburg, Marburg (Germany)] [Physics Department, University of Marburg, Marburg (Germany); [Soultek Internet Service, Marburg (Germany)

1997-02-01T23:59:59.000Z

470

A new smoothed particle hydrodynamics non-Newtonian model for friction stir welding: Process modeling and simulation of microstructure evolution in a magnesium alloy  

SciTech Connect (OSTI)

We present a new smoothed particle hydrodynamics (SPH) model for friction stir welding (FSW). FSW has found broad commercial application in the marine, aerospace, rail and automotive industries. Development of the FSW process for each new application, however, has remained largely empirical. Few established numerical modeling techniques have been developed that can explain and predict important features of the process physics involved in FSW. This is particularly true in the areas of material ?ow, mixing mechanisms, and void formation. In this paper we present a novel modeling approach to simulate FSW that may have signi?cant advantages over current ?nite element or ?nite di?erence based methods. Unlike traditional grid-based methods, Lagrangian particle methods such as SPH can simulate the dynamics of interfaces, large material deformations, and the materials strain and temperature history without employing complex tracking schemes. Three-dimensional simulations of FSW on AZ31 Mg alloy are presented. Numerical results are in a close quantitative agreement with experimental observations.

Pan, Wenxiao; Li, Dongsheng; Tartakovsky, Alexandre M.; Ahzi, Said; Khraisheh, Marwan; Khaleel, Mohammad A.

2013-09-06T23:59:59.000Z

471

An experimental study of the hydrodynamics and cluster formation in a circulating fluidized bed. Topical report, January 1, 1991--June 30, 1992  

SciTech Connect (OSTI)

This research program involves two major aspects. First, to evaluate techniques to effectively probe the polydisperse gas-solid flows and second, to apply these techniques to study the gas-solid flow structure and clusters in the riser of a circulating fluidized bed riser. Amongst the non-intrusive techniques a modified laser Doppler technique based on the fluorescence-emission concept has been adopted and the other techniques involve pitot-static pressure probes. A circulating fluidized bed (CFB) facility has been designed, built and is currently operational at West Virginia University. The design provides for maximum versatility in investigating the hydrodynamics of the CFB riser. Two stage cyclones are employed to capture the particles exhausted from the riser. Measurements of gas velocity distribution were carried out in the circulating fluidized bed riser. with particles having a mean diameter of 112 {mu}m and a density of 2305 kg/m{sup 3} and another set of particles with a mean diameter of 145 {mu}m and a density of 2245 kg/m{sup 3}. The experimental results showed that the local gas velocity varied with the radial position, elevation, solids circulation rate, superficial velocity and particle size. A general formula for gas velocity distribution in the circulating fluidized bed riser was obtained based on the particle circulation, superficial velocity and particle diameter. The pressure drops across the L-valve were also studied for different particle sizes, L-valve diameters and aeration. The solids flowrate was found to be a function of the L-valve geometry, operating parameters and solids properties. Pressure drop of L-valve increases with increasing solids diameter and decreasing diameter of the L-valve. Pressure drop across standpipe increases as the solids diameter and diameter of the standpipe decrease.

Gautam, M.; Jurewicz, J.; Heping, Y.; Clifton, K.

1992-07-01T23:59:59.000Z

472

Comprehensive Approaches to Multiphase Flows in Geophysics - Application to nonisothermal, nonhomogenous, unsteady, large-scale, turbulent dusty clouds I. Hydrodynamic and Thermodynamic RANS and LES Models  

SciTech Connect (OSTI)

The objective of this manuscript is to fully derive a geophysical multiphase model able to ''accommodate'' different multiphase turbulence approaches; viz., the Reynolds Averaged Navier-Stokes (RANS), the Large Eddy Simulation (LES), or hybrid RANSLES. This manuscript is the first part of a larger geophysical multiphase project--lead by LANL--that aims to develop comprehensive modeling tools for large-scale, atmospheric, transient-buoyancy dusty jets and plume (e.g., plinian clouds, nuclear ''mushrooms'', ''supercell'' forest fire plumes) and for boundary-dominated geophysical multiphase gravity currents (e.g., dusty surges, diluted pyroclastic flows, dusty gravity currents in street canyons). LES is a partially deterministic approach constructed on either a spatial- or a temporal-separation between the large and small scales of the flow, whereas RANS is an entirely probabilistic approach constructed on a statistical separation between an ensemble-averaged mean and higher-order statistical moments (the so-called ''fluctuating parts''). Within this specific multiphase context, both turbulence approaches are built up upon the same phasic binary-valued ''function of presence''. This function of presence formally describes the occurrence--or not--of any phase at a given position and time and, therefore, allows to derive the same basic multiphase Navier-Stokes model for either the RANS or the LES frameworks. The only differences between these turbulence frameworks are the closures for the various ''turbulence'' terms involving the unknown variables from the fluctuating (RANS) or from the subgrid (LES) parts. Even though the hydrodynamic and thermodynamic models for RANS and LES have the same set of Partial Differential Equations, the physical interpretations of these PDEs cannot be the same, i.e., RANS models an averaged field, while LES simulates a filtered field. In this manuscript, we also demonstrate that this multiphase model fully fulfills the second law of thermodynamics and fulfills the necessary requirements for a well-posed initial-value problem. In the next manuscripts, we will further develop specific closures for multiphase RANS, LES, and hybrid-LES.

S. Dartevelle

2005-09-05T23:59:59.000Z

473

Hydrodynamic properties of carbon nanotubes  

Science Journals Connector (OSTI)

We study water flowing past an array of single walled carbon nanotubes using nonequilibrium molecular dynamics simulations. For carbon nanotubes mounted with a tube spacing of 16.416.4 nm and diameters of 1.25 and 2.50 nm, respectively, we find drag coefficients in reasonable agreement with the macroscopic, Stokes-Oseen solution. The slip length is -0.11 nm for the 1.25 nm carbon nanotube, and 0.49 for the 2.50 nm tube for a flow speed of 50 m/s, respectively, and 0.28 nm for the 2.50 nm tube at 200 m/s. A slanted flow configuration with a stream- and spanwise velocity component of 100 ms-1 recovers the two-dimensional results, but exhibits a significant 88 nm slip along the axis of the tube. These results indicate that slip depends on the particular flow configuration.

J. H. Walther; T. Werder; R. L. Jaffe; P. Koumoutsakos

2004-06-04T23:59:59.000Z

474

DATA ASSIMILATION IN HYDRODYNAMIC MODELS  

E-Print Network [OSTI]

.D. Programme (EF-835) and DHI Water & Environment who supported the project financially. v #12;vi #12;Papers, 16 January 2004 Jacob Viborg Tornfeldt Sørensen iii #12;iv #12;Acknowledgements First of all, a deep at the Technical University of Denmark and Dr. Henrik Madsen from DHI Water & Environment for their help

475

San Diego County, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

County, California: Energy Resources County, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 33.0933809°, -116.6081653° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.0933809,"lon":-116.6081653,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

476

San Diego Country Estates, California: Energy Resources | Open Energy  

Open Energy Info (EERE)

Estates, California: Energy Resources Estates, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 33.006713°, -116.7836352° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.006713,"lon":-116.7836352,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

477

The San Diego Foundation Regional Focus 2050 Study  

E-Print Network [OSTI]

andchangeonairpollution?relatedhealtheffectsintheAirPollutionLevels ..28 Healthtoairpollution resultinginadversehealtheffects,

2008-01-01T23:59:59.000Z

478

Workplace Charging Challenge Partner: San Diego Gas & Electric...  

Broader source: Energy.gov (indexed) [DOE]

load management, influenced by local energy management systems andor utility Demand Response (DR) systems. Workplace charging The project reinforces SDG&E's commitment to the...

479

UNIVERSITY OF CALIFORNIA, SAN DIEGO Automated Feature Design...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Proc. Proceedings of International Workshop on Structural Health Monitoring, Palo Alto, California. 2013. D.Y. Harvey, M.D. Todd, Automated extraction of damage features...

480

UNIVERSITY OF CALIFORNIA SAN DIEGO Sampled Simulation for Multithreaded Processors  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 A. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 1. Sample Starting; they made me possible. iv #12;EPIGRAPH Measure with a micrometer. Mark with a chalk. Cut with an axe. Ray

Sair, Suleyman

Note: This page contains sample records for the topic "diego scripps hydrodynamic" from the National Library of EnergyBeta (NLEBeta).
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481

Proceedings of the University of California, San Diego  

E-Print Network [OSTI]

. Brueckner by George W. Webb ...............................................4 "Early Development of the UCLJ Physics Department" by Keith A. Brueckner................................................................5 Introduction of RAdm. Kleber S.(Skid)Masterson, Jr. by Keith A. Brueckner .............10 "National Security

Kritsuk, Alexei

482

then UC is for you! UC San Diego  

E-Print Network [OSTI]

UC Santa Cruz UC Santa Barbara UCLA UC Irvine UC Davis Eureka Redwood National Park Lassen Volcanic Francisco MILES KM UC Davis 71 114 UC Berkeley 12 19 UC Merced 135 217 UC Santa Cruz 74 119 UC Santa Barbara of California with new technology, innovative approaches and energy-saving sustainable practices. UC SAN DIEg

California at Santa Cruz, University of

483

TechTIPS 20062007 Biennial Report UC San Diego  

E-Print Network [OSTI]

InDa Dale Director, office of Contract and Grant administration JaMeS hollan Professor, Cognitive Science PaUl keDRoSky executive Director, William J. von liebig Center Jacobs School of engineering MIChael kelne laboratory laWRenCe MIlSTeIn Professor, electrical and Computer engineering Jane MooReS Interim Director

Fainman, Yeshaiahu

484

Two Milling Stone Inventories from Northern San Diego County, California  

E-Print Network [OSTI]

King, Chester, Thomas Blackburn, and Ernest Chandonet 1968 The Archaeological Investigation of Three Sites on the Century Ranch, Western Los Angeles County, California.

True, D. L; Beemer, Eleanor

1982-01-01T23:59:59.000Z

485

UC San Diego Skaggs School of Pharmacy & Pharmaceutical Sciences  

E-Print Network [OSTI]

6 9 10 12 13 14 15 a. 1st icon from the left: Double arrow, Shortens/lengthens the toolbar b. 2nd icon: Arrow, Hides the toolbar completely. To show it again, press F9 c. 3rd icon: %/0, Toggles student responses between percentage and count d. 4th icon: Bar chart, Data slicing e. 5th icon: Bar Chart, Clears

Gleeson, Joseph G.

486

Physical Wellness: Nutrition 101 UC San Diego Student Health Services  

E-Print Network [OSTI]

: makes up cell's membranes; protects nerves and organs; provides a store of energy; insulation Sources: ­ whole milk, butter, cheese, and ice cream; red meat; chocolate; coconuts, coconut milk

Krstic, Miroslav

487

The San Diego Foundation Regional Focus 2050 Study  

E-Print Network [OSTI]

globalwarmingandsealevelrise? Science Miller,N. climatechangeandsealevelrise:Potentiallossesofprojectingfuturesea?levelrise. Science Rykaczewski,

2008-01-01T23:59:59.000Z

488

THE SAN DIEGO MEETING OF THE PACIFIC DIVISION  

Science Journals Connector (OSTI)

...traces of copper or zinc salts. W. E. Allen pointed...temperature as employed in desert soils. A. G. Vestal discussed...the coastal sage-brush scrub and related plant communities-the...life-forms of the Sonoran Desert of North America and made...

J. MURRAY LUCK

1938-09-02T23:59:59.000Z

489

Coastal cliff erosion at Point Loma San Diego, California  

E-Print Network [OSTI]

and drying weathering, dissolution, abrasion, quarrying and rock falls was studied. The cliffs are eroded into the Upper Cretaceous Point Lorna Formation (deep-sea fan deposit), which consists of inter- bedded sandstones and mudstones. Several slope... slow weathering. They have retreated a few feet to tens of feet since the sea reached its present level. Where they are cut by faults or joints, narrow zones of retreat extend 100's of feet into the cliff, forming caves or bays. Mudstones, where...

Gregg, Jack Haven

2012-06-07T23:59:59.000Z

490

Case School of Engineering San Diego Programs WEARABLE COMPUTING  

E-Print Network [OSTI]

-to-plate, direct printing, 3D printing, and screening techniques for their applicability to the manufacturing-dimensional (3D) printing, screen printing 14.Testing and verification 15.Packaging

Rollins, Andrew M.

491

The San Diego Foundation Regional Focus 2050 Study  

E-Print Network [OSTI]

Regional Growth Forecast Reverse Osmosis Reactive organicenergydemand. Reverseosmosis(RO)systemsdonot

2008-01-01T23:59:59.000Z

492

University of California, San Diego Marine Physical Laboratory, 0902  

E-Print Network [OSTI]

levels may change on storage, their stability has not been examined; CO2 analyses were performed over * 2184.76 ± 0.52 µmol·kg­1 STORAGE: The bottles should be stored out of direct sunlight, and preferably for seawater analysis, Pergamon Press, Oxford, 173 pp. #12;

493

University of California, San Diego Marine Physical Laboratory, 0902  

E-Print Network [OSTI]

levels may change on storage, their stability has not been examined; CO2 analyses were performed over * 2219.15 ± 0.55 µmol·kg­1 STORAGE: The bottles should be stored out of direct sunlight, and preferably for seawater analysis, Pergamon Press, Oxford, 173 pp. #12;